text:
Anne Arundel County, Maryland

Anne Arundel County, also notated as AA or A.A. County, is a county located in the U.S. state of Maryland. As of the 2020 United States census, its population was 588,261, an increase of just under 10% since 2010. Its county seat is Annapolis, which is also the capital of the state. The county is named for Anne Arundell (c. 1615/1616–1649), Lady Baltimore, a member of the ancient family of Arundells in Cornwall, England, and the wife of Cecilius Calvert, 2nd Baron Baltimore (1605–1675), founder and first lord proprietor of the colony Province of Maryland.

Anne Arundel County is included in the Baltimore–Columbia–Towson metropolitan statistical area, which is also included in the Washington–Baltimore–Arlington combined statistical area.

History
The county was named for Lady Anne Arundell, (1615/1616–1649), the daughter of Thomas Arundell, 1st Baron Arundell of Wardour, members of the ancient family of Arundells in Cornwall, England. She married Cecilius Calvert, second Lord Baltimore, (1605–1675), and the first lord proprietor of the colony, Province of Maryland, in an arranged marriage contract in 1627 or 1628. Modern spelling adds an 'e' to her first name of "Ann" and removes the second 'L' from the family name of "Arundell", but the old traditional spelling of her name is still used in the title of the local historical society, the Ann Arundell County Historical Society.

Anne Arundel County was originally part of St. Mary's County, the province's first erected county in the southern portion of the Province of Maryland, which had first been established by arriving settlers in 1634. In 1650, the year after Lady Ann Arundell's death, the county separated from St. Mary's and "erected" into its own jurisdiction and became the third of the 23 Maryland counties. It was composed of the hundreds of Town Neck, Middle Neck, Broad Neck, South River, West River, and Herring Creek. Between 1654 and 1658, the county was known as "Providence" by many of its early settlers.

On March 25, 1655, after the English Civil War, (1642–1651), in Europe, the Battle of the Severn, the first naval colonial battle ever fought in North America, was fought in Anne Arundel County on the Severn River between Puritan forces supporting the Commonwealth of England and forces loyal to Lord Proprietor Cecilius Calvert. The Commonwealth forces under William Fuller were victorious.

In 1692, the Church of England, also known as the Anglican Church, became the established church of the Province of Maryland through an Act of the General Assembly. Ten counties had been established in the colony, and those counties were divided into 30 parishes, with vestrymen appointed within each. Ann Arrundell County was divided into four parishes: Herring Creek, South River, Middle Neck, and Broad Neck.

Between 1694 and 1695, the provincial capital of Maryland was moved from St. Mary's City along the northern shore of the Potomac River across from the southern colonial border with the Province of Virginia in St. Mary's County farther north along the western shore of the Chesapeake Bay, midway in the colony to Annapolis in Anne Arundel County. Prior to the move, Annapolis was known as "Providence".

During the American Revolutionary War, citizens of Anne Arundel County supported the Continental Army by providing troops for three regiments. The 3rd Maryland Regiment, the 4th Maryland Regiment, and the 6th Maryland Regiment were recruited in the county.

During the War of 1812, one of the original six heavy frigates of the recently re-established United States Navy, U.S.S. Constitution, sailed from Annapolis prior to its victorious engagement with the H.M.S. Guerriere of the British Royal Navy.

On May 22, 1830, the inaugural horse-drawn train of the Baltimore and Ohio Railroad travelled the 13 mi of the newly completed track from Mount Clare Station in southwestern Baltimore to Ellicott Mills, (now Ellicott City), then in the Western or Howard District (now Howard County) of Anne Arundel County. This was the first regular railroad passenger service in the United States. In 1831, land west of the railroad was considered the Howard District of Anne Arundel County. In 1851, The Howard District was broken off to form Howard County, now the 21st county in Maryland (of 23).

The county has a number of properties on the National Register of Historic Places.

Geography
According to the U.S. Census Bureau, the county has a total area of 588 sqmi, of which 173 sqmi (29%) is covered by water. Anne Arundel County is located to the south of Baltimore.

Most of the county's borders are defined by water. To the east lies the western shore of the Chesapeake Bay, and numerous tidal tributaries of the bay indent the shoreline, the various rivers, creeks, streams, inlets forming prominent peninsulas, also known as "necks" (as further south in Virginia). The largest of these tributaries include (from north to south), the Magothy River, Severn River, South River, and the West River. Further south, the upper Patuxent River forms the border of Anne Arundel with Prince George's County to the west. Deep Run forms part of the northwestern border with Howard County, and Lyons Creek forms part of the southern border with Calvert County. The Patapsco River to the north is the border with Baltimore County, but the communities and areas of Brooklyn and Curtis Bay neighborhoods (and adjacent Fairfield, Wagner's Point [also known as East Brooklyn], Arundel Cove [off of Curtis Creek], and Hawkins Point), lying south of the Patapsco River were annexed from Anne Arundel County to Baltimore in the third major annexation of January 1919.

Anne Arundel County originally included all of the land between the Patuxent River and the Patapsco River (mainstem and South Branch) upstream to their headwaters on Parr's Ridge. The northwestern section of this long tract later became Howard County, with the border between the two running very close to the Atlantic Seaboard fall line. As a result, Anne Arundel County lies almost entirely within the Atlantic Coastal Plain, while Howard County is almost entirely within the Piedmont province.

Elevations in Anne Arundel County range from sea level at the Chesapeake and tidal tributaries to about 300 ft in western areas near the fall line. The terrain is mostly flat or gently rolling, but more dramatic banks and bluffs can be found where waterways cut through areas of higher elevation.

With the exception of the very limited extent of Piedmont underlain by Precambrian to early Paleozoic metamorphic rock, all of the county is underlain by thick deposits of gravel, sand, silt, and clay dating from the early Cretaceous to Holocene times. Most of these sediments are unconsolidated but include local formations of sandstone, especially in the Pasadena area.

Adjacent counties and independent city

 * Baltimore County (north)
 * Baltimore City (north)
 * Calvert County (south)
 * Kent County (northeast)
 * Howard County (northwest)
 * Prince George's County (southwest)
 * Queen Anne's County (east)
 * Talbot County (southeast)

National protected area

 * Patuxent Wildlife Research Center (part)

Climate
Anne Arundel County has a humid subtropical climate, with hot summers and cool winters. Annual precipitation averages around 40 in per year throughout the county, with a fairly even distribution throughout the year. Annual snowfall totals around 20.1 in on average at BWI Airport, which has an elevation of 47.5 m above sea level. Slightly colder winter temperatures and higher snowfall are experienced at the higher elevations, with slightly lower snowfall closer to sea level. According to the most recent USDA Hardiness zone maps, the lowland areas of the county fall into Zone 8a, with an expected annual minimum temperatures of 10 to 15 F, while higher elevation and inland areas fall into Zone 7b, with expected annual minima of 5 to 10 F.

Politics and government
Anne Arundel County has had a charter government since 1965. The government consists of a county executive and a seven-member county council. These members are elected in the same years Maryland conducts its gubernatorial and legislative elections, and may serve a maximum of two consecutive terms.

The Democrats have the most registered voters in the county, but the large number of Republican-leaning independents means Republicans win more county-wide elections than in other mostly suburban counties in Maryland, but Democrats are the dominant party in Annapolis city elections. In the 2016 presidential election, Anne Arundel County voted for Hillary Clinton over Donald Trump by 6,016 votes. It was the first time that the county had supported a Democrat for president since 1964. Four years later, Joe Biden won the county by nearly 15%, the largest margin of victory for a Democrat in the county since the landslide election of Lyndon Johnson in the 1964 presidential election.

Voter registration

 * }

County Executives
The County Executive oversees the executive branch of the county government, which consists of a number of offices and departments. The executive branch is charged with implementing County law and overseeing the operation of the county government.

County Council
The County Council, as the legislative branch, adopts ordinances and resolutions, and has all of the county's legislative powers. The most recent county election occurred November 8, 2022.

Law enforcement

Several major law enforcement agencies serve Anne Arundel County:

 * Anne Arundel County Police Department is headed by Chief Amal Awad.
 * Anne Arundel County Sheriff's Office is headed by Sheriff Everett Sesker.
 * Annapolis Police Department
 * Maryland State Police
 * Maryland Natural Resources Police
 * Maryland Transportation Authority Police
 * Maryland Transit Administration Police
 * Anne Arundel County Department of Detention Facilities

Federal representation
In the 118th Congress, Anne Arundel County is represented in the U.S. House of Representatives by John Sarbanes (D) of the 3rd district, and Steny Hoyer (D) of the 5th district.

2010 census
As of the 2010 United States Census, 537,656 people, 199,378 households, and 139,262 families were residing in the county. The population density was 1,295.9 PD/sqmi. The 212,562 housing units had an average density of 512.3 /sqmi. The racial makeup of the county was 75.4% White, 15.5% Black or African American, 3.4% Asian, 0.3% American Indian, 0.1% Pacific Islander, 2.4% from some other race, and 2.9% from two or more races. Those of Hispanic or Latino origin made up 6.1% of the population. In terms of ancestry, 23.3% were German, 18.6% were Irish, 12.3% were English, 7.4% were Italian, 5.0% were Polish, and 4.4% were American.

Of the 199,378 households, 34.6% had children under 18 living with them, 53.1% were married couples living together, 12.1% had a female householder with no husband present, 30.2% were not families, and 23.7% of all households were made up of individuals. The average household size was 2.63, and the average family size was 3.11. The median age was 38.4 years.

The median income for a household in the county was $83,456 and for a family was $97,557. Males had a median income of $63,187 versus $48,750 for females. The per capita income for the county was $38,660. About 3.3% of families and 5.3% of the population were below the poverty line, including 6.9% of those under age 18 and 5.5% of those age 65 or over.

2000 census
As of the census of 2000, 489,656 people, 178,670 households, and 129,178 families were residing in the county. The population density was 1,177 people/sq mi. There were 186,937 housing units with an average density of 449 /mi2. The racial makeup of the county was 81.24% White, 13.57% Black or African American, 0.30% Native American, 2.29% Asian, 0.06% Pacific Islander, 0.85% from other races, and 1.69% from two or more races. About 2.63% of the population were Hispanic or Latino of any race; 17.7% were of German, 13.1% Irish, 10.5% English, 8.1% United States or American, and 7.0% Italian ancestry.

Of the 178,670 households, 34.9% had children under 18 living with them, 57.2% were married couples living together, 11.1% had a female householder with no husband present, and 27.7% were not families. About 21.3% of all households were made up of individuals, and 6.4% had someone living alone who was 65 or older. The average household size was 2.65, and the average family size was 3.09.

In the county, the age distribution was 25.2% under 18, 8.10% from 18 to 24, 32.8% from 25 to 44, 23.9% from 45 to 64, and 10.0% who were 65 or older. The median age was 36 years. For every 100 females, there were 99.10 males. For every 100 females age 18 and over, there were 97.10 males.

Principal employers
According to the Maryland Department of Business and Economic Development, the following were the principal employers in the county in November 2014 (excluding U.S. post offices and state and local governments, but including public institutions of higher education).

Personal income
In 2000, the median income for a household in the county was $61,768, and the median income for a family was $69,019 (these figures had risen to $79,294 and $91,071 respectively as of a 2007 estimate ). Males had a median income of $43,747 versus $32,348 for females. The per capita income for the county was $27,578. About 3.60% of families and 5.10% of the population were below the poverty line, including 6.30% of those under age 18 and 5.80% of those age 65 or over.

State government
Several state agencies are headquartered in unincorporated areas in Anne Arundel County. Executive departments include the Department of Agriculture, the Aviation Administration, the Department of Housing and Community Development, and the Department of Transportation. The Rural Maryland Council, an independent agency, is also headquartered in an unincorporated area in the county.

State correctional facilities
The Maryland House of Correction, operated by the Maryland Department of Public Safety and Correctional Services, was located in Anne Arundel County. The prison was closed in 2007.

The Maryland Department of Public Safety and Correctional Services operates several additional correctional facilities in the unincorporated town of Jessup in Anne Arundel County, including:

 * Brockbridge Correctional Facility
 * Jessup Correctional Institution
 * Jessup Pre-Release Unit
 * Maryland Correctional Institution – Jessup
 * Maryland Correctional Institution for Women

District of Columbia facilities
The District of Columbia Department of Youth Rehabilitation Services (DYRS) operates the New Beginnings Youth Development Center, a secure youth prison, in the county. Oak Hill Youth Center, the previous DYRS secure facility, was also in the county.

U.S. Department of Defense facilities
Fort George G. Meade is a large U.S. Army post located in the northwest of the county. It is the home of the National Security Agency.

The Naval Academy is located in Annapolis.

Healthcare
There are two full-service hospitals in Anne Arundel County: Anne Arundel Medical Center in Annapolis and Baltimore Washington Medical Center (formerly North Arundel Hospital) in Glen Burnie, part of the University of Maryland Medical System.

Media

 * The newspapers of record are The Capital and the Maryland Gazette (now owned by The Capital), which was founded in 1727.

Education

 * Children are educated by the Anne Arundel County Public Schools, which cover the entire county.
 * Postsecondary education is offered by Anne Arundel Community College at several locations throughout the county.
 * Anne Arundel County is also home to the United States Naval Academy and St. John's College, U.S., both in Annapolis.

Transportation
Anne Arundel County is the home of Baltimore-Washington International Thurgood Marshall Airport, commonly referred to as BWI. BWI serves as the main airport for the metropolitan Baltimore region. It is also an increasingly popular alternative airport to residents of the Washington, D.C., area. BWI is an East Coast hub for Southwest Airlines, meaning that nonstop flights are available between BWI and much of the country.

The southern portion of the Maryland Transit Administration's Light Rail system, connecting downtown Baltimore with BWI, runs through the northern part of Anne Arundel County.

The county also has multiple stops on the MARC commuter rail service, including a stop at BWI Rail Station, located near BWI Airport. Amtrak trains also stop at BWI's train station.

The Laurel-based Connect-a-ride system operates two routes in the western portion of the county, including Severn, Arundel Mills, Maryland City, Glen Burnie, Hanover, and Odenton. Howard County's Howard Transit Silver route serves Arundel Mills shopping mall and BWI Thurgood Marshall Airport.

Maryland Park Service
Sandy Point State Park is located at the end of the Broadneck peninsula near the west end of the Chesapeake Bay Bridge. It features a beach and marina and hosts many festivals and special events throughout the year. Helen Avalynne Tawes Garden is located at the Department of Natural Resources headquarters in Annapolis. The 5 acre garden features representations of the state's various geographic areas. The county also contains some of the easternmost portions of Patapsco Valley State Park, consisting of mostly undeveloped areas of forest and wetlands along the lower Patapsco River.

Anne Arundel Recreation and Parks
The Department of Recreation and Parks maintains "a comprehensive system of recreational programs for county residents and the preservation of valuable land," including indoor and outdoor sports facilities, community parks, green ways, archaeological, environmental, and historical preserves, and large regional facilities. Some of the major facilities include the Baltimore & Annapolis Trail, Downs Park, Jug Bay Wetlands Sanctuary, Fort Smallwood Park, Kinder Farm Park, and Quiet Waters Park.

Other attractions include the Maryland Renaissance Festival in Crownsville, the Maryland State House and the Colonial Annapolis Historic District.

Anne Arundel County is home to the two largest shopping malls in the State of Maryland: Westfield Annapolis Mall and Arundel Mills in Hanover in addition to Marley Station Mall in Glen Burnie. Adjacent to Arundel Mills is the Maryland Live! casino.

Communities

 * Bracketed number refers to location on map

City

 * Annapolis (23) (county seat)

Town

 * Highland Beach (31)

Census-designated places

 * Annapolis Neck (30)
 * Arden on the Severn (18)
 * Arnold (15)
 * Brooklyn Park (32)
 * Cape Saint Claire (21)
 * Crofton (17)
 * Crownsville (20)
 * Deale (29)
 * Edgewater (25)
 * Ferndale (6)
 * Fort Meade (2)
 * Friendship
 * Galesville
 * Gambrills
 * Glen Burnie (9)
 * Herald Harbor (19)
 * Jessup (1) (partly in Howard County)
 * Lake Shore (13)
 * Linthicum (7)
 * Maryland City (3)
 * Mayo (27)
 * Naval Academy
 * Odenton (16)
 * Parole (22)
 * Pasadena (10)
 * Pumphrey (8)
 * Riva (24)
 * Riviera Beach (12)
 * Selby-on-the-Bay (26)
 * Severn (4)
 * Severna Park (14)
 * Shady Side (28)
 * South Gate (5)

Unincorporated communities

 * Beverly Beach
 * Bristol
 * Chestnut Hill Cove
 * Churchton
 * Davidsonville
 * Fairhaven
 * Germantown
 * Gibson Island
 * Green Haven
 * Hanover (partly in Howard County)
 * Harmans
 * Harundale
 * Harwood
 * Hillsmere Shores
 * Jacobsville
 * Londontowne (25)
 * Lothian
 * Millersville
 * Orchard Beach
 * Owensville
 * Riverdale
 * Rose Haven
 * Russett
 * Sherwood Forest
 * Sudley
 * Tracys Landing
 * Waysons Corner
 * West River
 * Winchester-on-the-Severn
 * Woodland Beach

Notable people

 * Brady Barr, herpetologist and television host
 * Steve Bisciotti, owner of the Baltimore Ravens
 * Peter Bondra, ice hockey player
 * Tamar Braxton, entertainer
 * Toni Braxton, entertainer
 * Jeff Hatch, football player
 * Johns Hopkins, philanthropist and founder of Johns Hopkins University
 * Craig Laughlin, ice hockey player and broadcaster
 * Ronald Malfi, author
 * Travis Pastrana, motosports competitor
 * Pat Sajak, entertainer
 * Mark Teixeira, baseball player
 * Steve Wojciechowski, basketball player and coach

title: Anne Arundel County, Maryland


text:
Informix

Informix is a product family within IBM's Information Management division that is centered on several relational database management system (RDBMS) and multi-model database offerings. The Informix products were originally developed by Informix Corporation, whose Informix Software subsidiary was acquired by IBM in 2001.

In April 2017, IBM delegated active development and support to HCL Technologies for 15 years, with a number of IBM employees working on Informix also moving to HCL. As part of this arrangement IBM will continue to market and sell it as IBM Informix to their customers, with HCLTech able to market and sell it as HCL Informix.

The current version of Informix is 14.10 and forms the basis of several product editions with variation in capacity and functionality. The Informix database has been used in many high transaction rate OLTP applications in the retail, finance, energy and utilities, manufacturing and transportation sectors. More recently the server has been enhanced to improve its support for data warehouse workloads. Through extensions, Informix supports data types that are not a part of the SQL standard.

On July 24, 2020, HCL announced OneDB Database Server V1.0.0.0 as a multi-model (relational, object-relational, and dimensional) DBMS based on Informix. On August 19, 2021 HCL released OneDB 2.0 as a cloud native, multi-cloud, Kubernetes-orchestrated offering.

On December 29, 2021, Actian (formerly Ingres Corporation) became fully owned by HCL America. Actian remained a separate entity, now acting as the Data, Analytics and Insights division of HCLSoftware. It is expected that the Informix portfolio will be transferred from HCL to Actian, with HCL Informix and OneDB already available for download at Actian's Electronic Software Distribution (ESD) portal.

Key products
As of 2023, the current version of both IBM and HCL Informix is 14.10. The major enhancements made over previous releases were adding built-in index compression, integration of JSON collections with support for MongoDB JSON drivers into the server, and an enhancement permitting database objects to be partitioned across multiple servers in a cluster or grid (aka sharding). Queries can optionally return data from the locally connected server instance or from an entire grid with the same SQL.

Informix version 14.10 introduced support for partial indexing where only a subset of the rows in a table are indexed and for multi-valued key indexes which support indexing the elements within multi-valued data types such as LIST, SET, MULTISET, and BSON array fields.

Heterogeneous clusters are fully supported, and there are several deployment options that are available, including some that provide very high levels of data redundancy and fault tolerance. This feature is marketed by IBM as Informix Flexible Grid.

IBM Informix is offered in a number of editions, including free developer editions, editions for small and mid-sized business, and editions supporting the complete feature set and designed to be used in support of the largest enterprise applications. There used to be an advanced data warehouse edition, including the Informix Warehouse Accelerator (IWA), but it was deprecated in favor of the Advanced Enterprise Edition (which give entitlement rights to IWA).

Regarding HCL Informix, there is a single commercial version available, which is compatible with the IBM Informix Advanced Enterprise Edition, also having rights to IWA. There is also a trial version available, with no known limits, except for an expiration date.

HCL Informix 14.10 key highlights include:
 * Functional parity with IBM Informix 14.10 for on-premises deployment
 * Replacement of FlexNet license management with a script-based monitoring solution, consistent with other Actian offerings
 * Expanded O/S support with the addition of Linux on Power Little Endian and Solaris Sparc.

Positioning
Informix is generally considered to be optimized for environments with very low or no database administration, including use as an embedded database. It has a long track record of supporting very high transaction rates and providing uptime characteristics needed for mission critical applications such as manufacturing lines and reservation systems. Informix has been widely deployed in the retail sector, where the low administration overhead makes it useful for in-store deployments.

With the ability to deeply embed Informix in gateways and routers, timeseries support, small footprint, and low administration requirements, Informix is also targeted at Internet-of-Things solutions, where many of the data-handling requirements can be handled with gateways that embed Informix and connect sensors and devices to the internet.

Other products
In addition to the products based on the version 14.1 engine the Informix family also includes a number of legacy database products which are still supported in market. These include Informix OnLine, Informix Standard Edition (SE), and Informix C-ISAM. These products are simpler and smaller footprint database engines that are also frequently embedded in third party applications. Collectively these products are often referred to as the "Informix Classics".

The Informix family also includes: Obsolete and non-IBM Informix heritage products can run via emulation on modern hardware.
 * Informix Client-SDK: a client-side development environment which supports a number of different environments including .net for Windows developers and a variety of protocols for Unix and Linux environments.
 * Informix-4GL: a fourth generation language for application programming development.
 * Informix Warehouse Accelerator (IWA): an in-memory database based on IBM BLU acceleration technology, which uses a combination of newer technologies including in-memory data, tokenization, deep compression, and columnar database technology to provide extreme high performance on business intelligence and data warehouse style queries. IWA can be installed on the same computer as the Informix database server or another one. It receives copies of data from the database server and organizes it into data marts.
 * Informix Enterprise Gateway: it connects the Informix environment with that of any shared-library ODBC Level 2-compliant driver manager and driver on UNIX or Linux. Enterprise Gateway allows Informix database application developers and users to access information on DB2, Oracle, Sybase and other non-Informix databases as easily and transparently as if they were accessing an Informix database server.

Training and certification
IBM Training includes a complete set of core Data Servers Training courses that apply to Informix. These courses delve into many essential Informix concepts, from fundamentals to advanced SQL topics.

As part of IBM's Academic Initiative, IBM is offering Informix software, documentation and training to higher education institutions worldwide through its new Informix on Campus program. IBM is offering an inclusive package of Informix materials to college faculty called "Informix In a Box", which offers hands-on labs and PowerPoints to use in lessons, recorded training for teachers, DVDs with class material and VMware virtual appliance images, as well as T-shirts for students.

Users groups
Users groups remain active in Belgium, Croatia, France, Germany, the United States, and many other countries. The IIUG (International Informix Users Group) acts as a federation of those user groups and provides numerous services to its members.

license: Creative Commons - Attribution Share-Alike - https://creativecommons.org/licenses/by-sa/4.0/

title: Informix


text:
Allegheny River

The Allegheny River is a 325 mi headwater stream of the Ohio River that is located in western Pennsylvania and New York in the United States. It runs from its headwaters just below the middle of Pennsylvania's northern border, northwesterly into New York, then in a zigzag southwesterly across the border and through Western Pennsylvania to join the Monongahela River at the Forks of the Ohio at Point State Park in Downtown Pittsburgh, Pennsylvania.

The Allegheny River is, by volume, the main headstream of both the Ohio and Mississippi Rivers. Historically, the Allegheny was considered to be the upper Ohio River by both Native Americans and European settlers.

This shallow river has been made navigable upstream from Pittsburgh to East Brady by a series of locks and dams that were constructed during the early 20th century. A 24-mile-long portion of the upper river in Warren and McKean counties of Pennsylvania and Cattaraugus County in New York forms the Allegheny Reservoir, which was created by the erection of the Kinzua Dam in 1965 for flood control.

The name of the river is derived from one of a number of Delaware/Unami phrases that are homophones of the English name, with varying translations.

Etymology
The name Allegheny probably comes from Lenape welhik hane or oolikhanna, which means 'best flowing river of the hills' or 'beautiful stream'. There is a Lenape legend of a tribe called "Talligewi" who used to live along the river. Frederick Webb Hodge cited Henry Schoolcraft to connect the "Talligewi" to the Cherokee.

The following account of the origin of the name Allegheny was given in 1780 by Moravian missionary David Zeisberger: "All this land and region, stretching as far as the creeks and waters that flow into the Alleghene the Delawares called Alligewinenk, which means 'a land into which they came from distant parts'. The river itself, however, is called Alligewi Sipo. The whites have made Alleghene out of this, the Six Nations calling the river the Ohio."

The Delaware Tribe of Indians gives the Lenape name as Alikehane, "river where footprints can be seen."

Native Americans, including the Lenape and Iroquois, considered the Allegheny and Ohio rivers as the same, as is suggested by a New York State road sign on Interstate 86 that refers to the Allegheny River also as Ohiːyo'. The Geographic Names Information System lists O-hee-yo and O-hi-o as variant names. The river is called Ohi:'i:o` (river beautiful) in the Seneca language. In New York, areas around the river are often named with the alternate spelling Allegany in reference to the river; for example, the Village of Allegany and Allegany State Park. Port Allegany, located along the river in Pennsylvania near the border with New York, also follows this pattern.

Course
The Allegheny River rises in north central Pennsylvania, on Cobb Hill in Allegany Township in north central Potter County, 8 mi south of the New York–Pennsylvania border and a few miles northwest of the eastern triple divide. The stream flows south and passes under Pennsylvania Route 49 11 miles northeast of Coudersport where a historical marker that declares the start of the river is located. Cobb Hill is about a mile north. The stream flows southwest paralleling Route 49 to Coudersport.

It continues west to Port Allegany then turns north into western New York, looping westward across southern Cattaraugus County for approximately 30 mi, past Portville, Olean, Allegany and Salamanca and flowing through Seneca Indian Nation lands close to the northern boundary of Allegany State Park before re-entering northwestern Pennsylvania within the Allegheny Reservoir just east of the Warren-McKean county line, approx. 10 mi northeast of Warren.

It flows in a broad zigzag course generally southwest across Western Pennsylvania; first flowing southwest past Warren, Tidioute, Tionesta, Oil City, and Franklin, forming much of the northwestern boundary of Allegheny National Forest. South of Franklin it turns southeast across Clarion County in a meandering course, then turns again southwest across Armstrong County, flowing past Kittanning, Ford City, Clinton, and Freeport.

The river enters both Allegheny and Westmoreland counties, the Pittsburgh suburbs, and the City of Pittsburgh from the northeast. It passes the North Side, downtown Pittsburgh, and Point State Park. The Allegheny joins with the Monongahela River at the "Point" in downtown Pittsburgh to form the Ohio River.

Hydrography
The river is approximately 325 mi long, running through the U.S. states of New York and Pennsylvania. It drains a rural dissected plateau of 11580 sqmi in the northern Allegheny Plateau, providing the northeasternmost drainage in the watershed of the Mississippi River. Its tributaries reach to within 8 mi of Lake Erie in southwestern New York.

Water from the Allegheny River eventually flows into the Gulf of Mexico via the Ohio and Mississippi rivers.

The Allegheny Valley has been one of the most productive areas of fossil fuel extraction in United States history, with its extensive deposits of coal, petroleum, and natural gas.

Tributaries
In its upper reaches, the Allegheny River is joined from the south by Potato Creek 1.7 mi downstream of Coryville, Pennsylvania and from the north by Olean Creek at Olean, New York. Tunungwant "Tuna" Creek joins the river from the south in Carrollton, New York (flowing north from Bradford, Pennsylvania); the Great Valley Creek and Little Valley Creek join the river from the north at Salamanca, New York before becoming the Allegheny Reservoir.

After re-entering Pennsylvania, the river is joined from the east by Kinzua Creek 10 mi upstream of Warren; from the north by Conewango Creek at Warren; from the west by Brokenstraw Creek; from the east by East Hickory Creek at East Hickory; from the east by Tionesta Creek at Tionesta; from the north by Oil Creek at Oil City; from the west by French Creek at Franklin; from the east by the Clarion River, a principal tributary, at Parker; from the east by Crooked Creek southeast of Kittanning; and from the east by the Kiskiminetas River, another principal tributary, at Schenley.

Buffalo Creek enters at Freeport, Chartiers Run enters at Lower Burrell, Bull Creek enters at Tarentum, Pucketa Creek enters near New Kensington, Riddle Run enters at Springdale, and Girtys Run enters at Millvale. And finally, the Monongahela River enters the Allegheny at downtown Pittsburgh. Many additional streams enter or join with the Allegheny River along its course.

Locks, dams and bridges

Several locks were built in the early 20th century to make the Allegheny River navigable for 72 miles upstream from Pittsburgh to East Brady.

The Allegheny River has eight locks and fixed-crest dams numbered two through nine: Allegheny River Lock and Dam No. 2, 3, 4, 5, 6, 7, 8, 9 which form corresponding reservoirs.

The river is also impounded by the Kinzua Dam in northwestern Pennsylvania, resulting in the Allegheny Reservoir also known as Kinzua Lake and Lake Perfidy among the Seneca. The Seneca Pumped Storage Generating Station is associated with Kinzua Dam.

Numerous bridges and tunnels span the river throughout its course. The Allegheny River Tunnel, utilized by Pittsburgh Light Rail, went into service in 2012.

History
In the latter half of the 17th century, control of the river valley passed back-and-forth between Algonquian-speaking Shawnee and the Iroquois. By the time of the arrival of French colonialists in the early 18th century, the Shawnee were once again in control and formed an alliance with France against attempts by colonists from British North America to settler across the Allegheny Mountains. The conflict over the expansion of Anglo-American settlement into the Allegheny Valley and the surrounding Ohio Country was a primary cause of the French and Indian War in the 1750s. During the war, the village of Kittanning – the principal Shawnee settlement on the river – was completely destroyed during the Kittanning Expedition, which saw 300 provincial troops from the Province of Pennsylvania brutally attack the settlement.

After gaining control of the area in the 1763 Treaty of Paris, the British kept the area closed to Anglo-American colonists, in part to repair and maintain relations with the Native Americans. After the American Revolutionary War, the entire river valley became part of the new United States, and U.S. settlers forcibly displaced the region's indigenous population. During the 19th century, the river became a principal means of navigation in the upper Ohio valley, especially for the transport of coal. Although the building of the railroads lessened the importance of the river somewhat, the lower river (navigable as far as East Brady, Pennsylvania through locks) has continued to serve as a route of commercial transportation until the present day. In 1859, the first U.S. petroleum was drilled north of the river at Titusville. One of the underlying premises of the Genesee Valley Canal was its connection to the river, opening a trade route from Rochester, New York to the west. The advent of the railroads obviated any interest Pennsylvania might have had in participating to improve navigation on the river. The canal was closed in 1877 and the right-of-way sold to the Genesee Valley Canal Railroad.

In 1965, the completion of the federally sponsored Kinzua Dam for flood-control in northwestern Pennsylvania east of Warren created the long Allegheny Reservoir, known as Lake Perfidy among the Seneca, part of which is included in the Allegheny National Recreation Area. The dam flooded parts of lands deeded "forever" to the Seneca Nation of Indians by the 1794 Treaty of Canandaigua, and lands given to Cornplanter and his descendants. The event was described in the Johnny Cash song "As Long as the Grass Shall Grow" from the 1964 album Bitter Tears: Ballads of the American Indian, which focused on the history of and problems facing Native Americans in the United States.

The construction of the dam and the filling of the Allegheny Reservoir also necessitated the elimination of the small village of Corydon, which was located at the confluence of Willow Creek with the Allegheny River; and the small village of Kinzua, which was located at the confluence of Kinzua Creek with the Allegheny River. All residents of both villages were forced to move.

Many prominent individuals opposed the construction of the dam at that time because of the damage it would do to Seneca lands, including Pennsylvania Congressman John P. Saylor of Johnstown, and Howard Zahniser, executive director of The Wilderness Society and native of Tionesta—a small settlement located along the Allegheny River several miles downstream from Warren. During the campaign for the 1960 United States presidential election, John F. Kennedy assured the Seneca Nation that he would oppose the dam if elected. However, he failed to follow through on his pledge upon becoming president.

In 1992, 86.6 mi of the Allegheny River was designated Wild and Scenic. This designation comprises three segments of the river located in Warren, Forest, and Venango counties.

In popular culture
Depression-era folk singer Buster Red recorded "Allegheny River", wherein the river is a destructive force throughout life, but not necessarily a malignant one.

Folksinger Pete Seeger's song "Where the Old Allegheny and Monongahela Flow", depicts a character living in a city pining for a return to the Allegheny River.

Old Crow Medicine Show released a song entitled "Allegheny Lullaby" that detailed life along the Allegheny in late 20th century Rust Belt towns, the river serving as a metaphor for escape.

In 2008, Katie Spotz became the first person to swim the entire 325 mi of the Allegheny River; she was accompanied by safety kayaker, James Hendershott. The team began at the river's source in Warren, Pennsylvania on July 22 and finished at the "Point" in Downtown Pittsburgh on August 21.

In 2017 the documentary Lake of Betrayal was released detailing the struggle of the Seneca Nation over the Kinzua Dam project on the Allegheny in the 1960s.

New York

 * Allegany
 * Carrollton
 * Jimerson Town
 * Olean
 * Portville
 * St. Bonaventure
 * Salamanca
 * Weston Mills

Pennsylvania

 * Applewold
 * Arnold
 * Aspinwall
 * Blawnox
 * Brackenridge
 * Cheswick
 * Coudersport
 * Creighton
 * East Brady
 * East Hickory
 * Eldred
 * Emlenton
 * Etna
 * Ford City
 * Foxburg
 * Franklin
 * Freeport
 * Harmarville
 * Kennerdell
 * Kittanning
 * Lower Burrell
 * Manorville
 * Millvale
 * Natrona
 * New Kensington
 * Oakmont
 * Oil City
 * Parker
 * Penn Hills
 * Pittsburgh
 * Plum
 * Port Allegany
 * Roulette
 * Schenley
 * Sharpsburg
 * Springdale
 * Starbrick
 * Tarentum
 * Templeton
 * Tidioute
 * Tionesta
 * Verona
 * Warren
 * West Hickory
 * West Kittanning
 * Woodland Heights
 * Youngsville

title: Allegheny River


text:
Sun Tzu

Sun Tzu was a Chinese military general, strategist, philosopher, and writer who lived during the Eastern Zhou period (771–256 BC). Sun Tzu is traditionally credited as the author of The Art of War, an influential work of military strategy that has affected both Western and East Asian philosophy and military thought. Sun Tzu is revered in Chinese and East Asian culture as a legendary historical and military figure. His birth name was Sun Wu and he was known outside of his family by his courtesy name Changqing. The name Sun Tzu—by which he is more popularly known—is an honorific which means "Master Sun".

Sun Tzu mastered the military science of ancient China and created the military doctrine of asymmetrical warfare. According to it, an attack on the enemy should begin only after the enemy has no opportunity to either defend or counterattack. It was used in the wars in the era of the Warring States in ancient China (about 475–221 BC). Those combat combinations had specific names, descriptions and classifications.

Sun Tzu's historicity is uncertain. The Han dynasty historian Sima Qian and other traditional Chinese historians placed him as a minister to King Helü of Wu and dated his lifetime to 544–496 BC. Modern scholars accepting his historicity place the extant text of The Art of War in the later Warring States period of 475 to 221 BC, based on its style of composition and its descriptions of warfare. Traditional accounts state that the general's descendant Sun Bin wrote a treatise on military tactics, also titled The Art of War. Since both Sun Wu and Sun Bin were referred to as "Sun Tzu" in classical Chinese texts, some historians believed them identical, prior to the rediscovery of Sun Bin's treatise in 1972.

Sun Tzu's work has been praised and employed throughout the arc of East Asian military history since its composition, and eventually earned global attention. During the twentieth century, The Art of War grew in popularity and saw practical use in the Western world as well. It remains influential in many contemporary competitive endeavors across the modern world beyond military strategy and warfare, including espionage, culture, governance, business, and sports.

Life
The oldest available sources disagree as to where Sun Tzu was born. The Spring and Autumn Annals and Sima Qian's later Records of the Grand Historian (Shiji) state that Sun Tzu was born in Qi. Both sources also agree that Sun Tzu was born in the late Spring and Autumn period and that he was active as a general and strategist, serving King Helü of Wu in the sixth century BC, beginning around 512 BC. Sun Tzu's victories then inspired him to write The Art of War. The Art of War was one of the most widely read military treatises in the subsequent Warring States period, a time of constant war among seven ancient Chinese states—Zhao, Qi, Qin, Chu, Han, Wei, and Yan—who fought to control the vast expanse of fertile territory in Eastern China.

One of the better-known stories about Sun Tzu, taken from Sima Qian, illustrates Sun Tzu's temperament as follows: Before hiring Sun Tzu, the King of Wu tested Sun Tzu's skills by commanding him to train a harem of 180 concubines into soldiers. Sun Tzu divided them into two companies, appointing the two concubines most favored by the king as the company commanders. When Sun Tzu first ordered the concubines to face right, they giggled. In response, Sun Tzu said that the general, in this case himself, was responsible for ensuring that soldiers understood the commands given to them. Then, he reiterated the command, and again the concubines giggled. Sun Tzu then ordered the execution of the king's two favored concubines, to the king's protests. He explained that if the general's soldiers understood their commands but did not obey, it was the fault of the officers. Sun Tzu also said that, once a general was appointed, it was his duty to carry out his mission, even if the king protested. After both concubines were killed, new officers were chosen to replace them. Afterward, both companies, now well aware of the costs of further frivolity, performed their maneuvers flawlessly.

Sima Qian claimed that Sun Tzu later proved on the battlefield that his theories were effective (for example, at the Battle of Boju), that he had a successful military career, and that he wrote The Art of War based on his tested expertise. However, the Zuozhuan, a historical text written centuries earlier than the Shiji, provides a much more detailed account of the Battle of Boju, but does not mention Sun Tzu at all.

Historicity
Around the 12th century AD, some Chinese scholars began to doubt the historical existence of Sun Tzu, primarily on the grounds that he is not mentioned in the historical classic Zuo Zhuan, which mentions most of the notable figures from the Spring and Autumn period. The name "Sun Wu" (孫武) does not appear in any text prior to the Records of the Grand Historian, and may have been a made-up descriptive cognomen meaning "the fugitive warrior" – the surname "Sun" can be glossed as the related term "fugitive" (xùn 遜), while "Wu" is the ancient Chinese virtue of "martial, valiant" (wǔ 武), which corresponds to Sun Tzu's role as the hero's doppelgänger in the story of Wu Zixu. The only historical battle attributed to Sun Tzu, the Battle of Boju, has no record of him fighting in that battle.

Skeptics cite possible historical inaccuracies and anachronisms in the text, and that the book was actually a compilation from different authors and military strategists. Attribution of the authorship of The Art of War varies among scholars and has included people and movements including Sun; Chu scholar Wu Zixu; an anonymous author; a school of theorists in Qi or Wu; Sun Bin; and others. Sun Bin appears to have been an actual person who was a genuine authority on military matters, and may have been the inspiration for the creation of the historical figure "Sun Tzu" through a form of euhemerism. The name Sun Wu does appear in later sources such as the Shiji and the Wu Yue Chunqiu, but were written centuries after Sun Tzu's era.

The use of the strips in other works, however, such as The Methods of the Sima is considered proof of Sun Tzu's historical priority. According to Ralph Sawyer, it is very likely Sun Tzu did exist and not only served as a general, but also wrote the core of the book that bears his name. It is argued that there is a disparity between the large-scale wars and sophisticated techniques detailed in the text and the more primitive small-scale battles that many believe predominated in China during the 6th century BC. Against this, Sawyer argues that the teachings of Sun Wu were probably taught to succeeding generations in his family or a small school of disciples, which eventually included Sun Bin. These descendants or students may have revised or expanded upon certain points in the original text.

Skeptics who identify issues with the traditionalist view point to possible anachronisms in The Art of War including terms, technology (such as anachronistic crossbows), philosophical ideas, events, and military techniques that should not have been available to Sun Wu. Additionally, there are no records of professional generals during the Spring and Autumn period; these are only extant from the Warring States period, so there is doubt as to Sun Tzu's rank and generalship. This caused much confusion as to when The Art of War was actually written. The first traditional view is that it was written in 512 BC by the historical Sun Wu, active in the last years of the Spring and Autumn period (c. 722–481 BC). A second view, held by scholars such as Samuel Griffith, places The Art of War during the middle to late Warring States period (c. 481–221 BC). Finally, a third school claims that the slips were published in the last half of the 5th century BC; this is based on how its adherents interpret the bamboo slips discovered at Yinque Shan in 1972.

The Art of War

The Art of War is traditionally ascribed to Sun Tzu. It presents a philosophy of war for managing conflicts and winning battles. It is accepted as a masterpiece on strategy and has been frequently cited and referred to by generals and theorists since it was first published, translated, and distributed internationally.

There are numerous theories concerning when the text was completed and concerning the identity of the author or authors, but archeological recoveries show The Art of War had taken roughly its current form by at least the early Han period. Because it is impossible to prove definitively when the Art of War was completed before this date, the differing theories concerning the work's author or authors and date of completion are unlikely to be completely resolved. Some modern scholars believe that it contains not only the thoughts of its original author but also commentary and clarifications from later military theorists, such as Li Quan and Du Mu.

Of the military texts written before the unification of China and Shi Huangdi's subsequent book burning in the second century BC, six major works have survived. During the much later Song dynasty, these six works were combined with a Tang text into a collection called the Seven Military Classics. As a central part of that compilation, The Art of War formed the foundations of orthodox military theory in early modern China. Illustrating this point, the book was required reading to pass the tests for imperial appointment to military positions.

Sun Tzu's The Art of War uses language that may be unusual in a Western text on warfare and strategy. For example, the eleventh chapter states that a leader must be "serene and inscrutable" and capable of comprehending "unfathomable plans". The text contains many similar remarks that have long confused Western readers lacking an awareness of the East Asian context. The meanings of such statements are clearer when interpreted in the context of Taoist thought and practice.

Despite its title, The Art of War addresses strategy in a broad fashion, touching upon public administration and planning. The text outlines theories of battle, but also advocates diplomacy and the cultivation of relationships with other nations as essential to the health of a state. As such, the book has also become popular among political leaders and those in business management. For example, in the 1987 film Wall Street, the protagonist Gordon Gekko frequently cites passages from The Art of War as guiding principles for his aggressive trading techniques.

On 10 April 1972, the Yinqueshan Han Tombs were accidentally unearthed by construction workers in Shandong. Scholars uncovered a collection of ancient texts written on unusually well-preserved bamboo slips. Among them were The Art of War and Sun Bin's Military Methods. Although Han dynasty bibliographies noted the latter publication as extant and written by a descendant of Sun, it had previously been lost. The rediscovery of Sun Bin's work is regarded as extremely important by scholars, both because of Sun Bin's relationship to Sun Tzu and because of the work's addition to the body of military thought in Chinese late antiquity. The discovery as a whole significantly expanded the body of surviving Warring States military theory. Sun Bin's treatise is the only known military text surviving from the Warring States period discovered in the twentieth century and bears the closest similarity to The Art of War of all surviving texts.

Legacy
Sun Tzu's Art of War has influenced many notable figures. The Han dynasty historian Sima Qian recounted that China's first historical emperor, Qin's Shi Huangdi, considered the book invaluable in ending the time of the Warring States. In the 20th century, the Chinese Communist leader Mao Zedong partially credited his 1949 victory over Chiang Kai-shek and the Kuomintang to The Art of War. The work strongly influenced Mao's writings about guerrilla warfare, which further influenced communist insurgencies around the world.

The Art of War was introduced into Nara Japan in c. AD 760 and the book quickly became popular among Japanese military generals. Through its later influence on the Sengoku period "Great Unifiers" of Japan, Oda Nobunaga, Toyotomi Hideyoshi, and Tokugawa Ieyasu, it significantly affected the unification of Japan in the early modern era. The mastery of its teachings was honored among the samurai and its teachings were both exhorted and exemplified by influential daimyōs and shōguns. After the Meiji Restoration, it remained popular among the Imperial Japanese armed forces. The Admiral of the Fleet Tōgō Heihachirō, who led Japan's forces to victory in the Russo-Japanese War, was an avid reader of Sun Tzu.

Ho Chi Minh translated the work for his Vietnamese officers to study. His general Võ Nguyên Giáp, the strategist behind victories over the French, and wearing down American forces in Vietnam, was likewise an avid student and practitioner of Sun Tzu's ideas.

America's conflicts in East and Southeast Asia against Philippine, Imperial China, Japan, North Korea, and North Vietnam brought Sun Tzu to the attention of American military leaders. The Department of the Army in the United States, through its Command and General Staff College, has directed all units to maintain libraries within their respective headquarters for the continuing education of personnel in the art of war. The Art of War is mentioned as an example of works to be maintained at each facility, and staff duty officers are obliged to prepare short papers for presentation to other officers on their readings. Similarly, Sun Tzu's Art of War is listed on the Marine Corps Professional Reading Program. During the Gulf War in the 1990s, both Generals Norman Schwarzkopf Jr. and Colin Powell employed principles from Sun Tzu related to deception, speed, and striking one's enemy's weak points. However, the United States and other Western countries have been criticized for not truly understanding Sun Tzu's work and not appreciating The Art of War within the wider context of Chinese society.

Daoist rhetoric is a component incorporated in the Art of War. According to Steven C. Combs in "Sun-zi and the Art of War: The Rhetoric of Parsimony", warfare is "used as a metaphor for rhetoric, and that both are philosophically based arts." Combs writes: "Warfare is analogous to persuasion, as a battle for hearts and minds." The application of The Art of War strategies throughout history is attributed to its philosophical rhetoric. Daoism is the central principle in the Art of War. Combs compares ancient Daoist Chinese to traditional Aristotelian rhetoric, notably for the differences in persuasion. Daoist rhetoric in The Art of War warfare strategies is described as "peaceful and passive, favoring silence over speech". This form of communication is parsimonious. Parsimonious behavior, which is highly emphasized in The Art of War as avoiding confrontation and being spiritual in nature, shapes basic principles in Daoism.

Mark McNeilly writes in Sun Tzu and the Art of Modern Warfare that a modern interpretation of Sun and his importance throughout Chinese history is critical in understanding China's push to become a superpower in the twenty-first century. Modern Chinese scholars explicitly rely on historical strategic lessons and The Art of War in developing their theories, seeing a direct relationship between their modern struggles and those of China in Sun Tzu's time. There is a great perceived value in Sun Tzu's teachings and other traditional Chinese writers, which are used regularly in developing the strategies of the Chinese state and its leaders.

In 2008, the Chinese television producer Zhang Jizhong adapted Sun Tzu's life story into a 40-episode historical drama television series entitled Bing Sheng, starring Zhu Yawen as Sun Tzu.

The 2019 video game Age of Empires II: Definitive Edition contains challenge missions based on Sun Tzu's The Art of War, which explain its military tactics and strategies.

title: Sun Tzu


text:
Pope Dionysius

Pope St. Dionysius (Greek: Διονύσιος) was the bishop of Rome from 22 July 259 CE to his death on 26 December 268. His task was to reorganise the Catholic Church, after the persecutions of Emperor Valerian I, and the edict of toleration by his successor Gallienus. He also helped rebuild the churches of Cappadocia, devastated by the marauding Goths.

Pontificate
Dionysius may have been born in Magna Græcia, but this has not been verified. He was elected pope in 259, after the martyrdom of Sixtus II in 258. The Holy See had been vacant for nearly a year because it was difficult to elect a new pope during the violent persecution which Christians faced. When the oppression had begun to subside, Dionysius was raised to the office of Bishop of Rome. Emperor Valerian I, who had led the tyranny, was captured and killed by the King of Persia in 260. The new emperor, Gallienus, issued an edict of toleration, restoring the churches, cemeteries and other properties it had held, ushering in the nearly 40-year "Little Peace of the Church". To the new pope fell the task of reshaping the Catholic Church, which had fallen into great disorder.

Teaching regarding the relation of God to the Logos had arisen from Bishop Dionysius in Alexandria. The pope in Rome called for explanations; a satisfactory response duly arrived back, notwithstanding expostulation about the propriety of all this from some of the Alexandrian Christians.

To rebuild, and to ransom those held captive, Pope Dionysius sent large sums of money to the churches of Cappadocia, devastated by marauding Goths. Following Emperor Gallienus' edict of toleration, he brought order to the church and helped secure a peace that lasted until 303, some 35 years after his death on 26 December 268.

According to St. Athanasius, Pope St. Dionysius retroactively condemned Arianism far before the First Ecumenical Council of Nicaea on behalf of the entire Church saying, "For Dionysius, Bishop of Rome, having written also against those who said that the Son of God was a creature and a created thing, it is manifest that not now for the first time but from of old the heresy of the Arian adversaries of Christ has been anathematised by all."

In art, Dionysius is portrayed in papal vestments, along with a book.

title: Pope Dionysius


text:
Rodinia

Rodinia (from the Russian родина, rodina, meaning "motherland, birthplace" ) was a Mesoproterozoic and Neoproterozoic supercontinent that assembled 1.26–0.90 billion years ago (Ga) and broke up 750–633 million years ago (Ma). were probably the first to recognise a Precambrian supercontinent, which they named "Pangaea I." It was renamed "Rodinia" by who also were the first to produce a reconstruction and propose a temporal framework for the supercontinent.

Rodinia formed at c. 1.23 Ga by accretion and collision of fragments produced by breakup of an older supercontinent, Columbia, assembled by global-scale 2.0–1.8 Ga collisional events. Rodinia broke up in the Neoproterozoic with its continental fragments reassembled to form Pannotia 633–573 Ma. In contrast with Pannotia, little is known about the configuration and geodynamic history of Rodinia. Paleomagnetic evidence provides some clues to the paleolatitude of individual pieces of the Earth's crust but not to their longitude, which geologists have pieced together by comparing similar geologic features, often now widely dispersed.

The extreme cooling of the global climate around 717–635 Ma (the so-called Snowball Earth of the Cryogenian period) and the rapid evolution of primitive life during the subsequent Ediacaran and Cambrian periods are thought to have been triggered by the breaking up of Rodinia or to a slowing down of tectonic processes.

Paleogeographic reconstructions
The idea that a supercontinent existed in the early Neoproterozoic arose in the 1970s, when geologists determined that orogens of this age exist on virtually all cratons. Examples are the Grenville orogeny in North America and the Dalslandian orogeny in Europe. Since then, many alternative reconstructions have been proposed for the configuration of the cratons in this supercontinent. Most of these reconstructions are based on the correlation of the orogens on different cratons. Though the configuration of the core cratons in Rodinia is now reasonably well known, recent reconstructions still differ in many details. Geologists try to decrease the uncertainties by collecting geological and paleomagnetical data. Most reconstructions show Rodinia's core formed by the North American Craton (the later paleocontinent of Laurentia), surrounded in the southeast with the East European Craton (the later paleocontinent of Baltica), the Amazonian Craton and the West African Craton; in the south with the Río de la Plata and São Francisco cratons; in the southwest with the Congo and Kalahari cratons; and in the northeast with Australia, India and eastern Antarctica. The positions of Siberia and North and South China north of the North American craton differ strongly depending on the reconstruction:
 * SWEAT-Configuration (Southwest US-East Antarctica craton): Antarctica is southwest of Laurentia, and Australia is north of Antarctica.
 * AUSWUS-Configuration (Australia-western US): Australia is west of Laurentia.
 * AUSMEX-Configuration (Australia-Mexico): Australia is at the location of current day Mexico relative to Laurentia.
 * The "Missing-link" model by which has South China between Australia and the west coast of Laurentia. A revised "Missing-link" model is proposed in which Tarim Block serves as an extended or alternative missing-link between Australia and Laurentia.
 * Siberia attached to the western US (via the Belt Supergroup), as in.

Little is known about the paleogeography before the formation of Rodinia. Paleomagnetic and geologic data are only definite enough to form reconstructions from the breakup of Rodinia onwards. Rodinia is considered to have formed between 1.3 and 1.23 Ga and broke up again before 750 Ma. Rodinia was surrounded by the superocean Mirovia.

According to J.D.A. Piper, Rodinia is one of two models for the configuration and history of the continental crust in the latter part of Precambrian times. The other is Paleopangea, Piper's own concept. Piper proposes an alternative hypothesis for this era and the previous ones. This idea rejects that Rodinia ever existed as a transient supercontinent subject to progressive break-up in the late Proterozoic and instead that this time and earlier times were dominated by a single, persistent "Paleopangaea" supercontinent. As evidence, he suggests an observation that the palaeomagnetic poles from the continental crust assigned to this time conform to a single path between 825 and 633 Ma and latterly to a near-static position between 750 and 633 Ma. This latter solution predicts that break-up was confined to the Ediacaran period and produced the dramatic environmental changes that characterised the transition between the Precambrian and Phanerozoic. However, this theory has been widely criticized, as incorrect applications of paleomagnetic data have been pointed out.

Breakup
In 2009 UNESCO's International Geoscience Programme project 440, named "Rodinia Assembly and Breakup," concluded that Rodinia broke up in four stages between 825 and 550 Ma:
 * The breakup was initiated by a superplume around 825–800 Ma whose influence—such as crustal arching, intense bimodal magmatism, and accumulation of thick rift-type sedimentary successions—has been recorded in South Australia, South China, Tarim, Kalahari, India, and the Arabian-Nubian Craton.
 * Rifting progressed in the same cratons 800–750 Ma and spread into Laurentia and perhaps Siberia. India (including Madagascar) and the Congo–São Francisco Craton were either detached from Rodinia during this period or simply never were part of the supercontinent.
 * As the central part of Rodinia reached the Equator around 750–700 Ma, a new pulse of magmatism and rifting continued the disassembly in western Kalahari, West Australia, South China, Tarim, and most margins of Laurentia.
 * 650–550 Ma several events coincided: the opening of the Iapetus Ocean; the closure of the Braziliano, Adamastor, and Mozambique oceans; and the Pan-African orogeny. The result was the formation of Gondwana.

The Rodinia hypothesis assumes that rifting did not start everywhere simultaneously. Extensive lava flows and volcanic eruptions of Neoproterozoic age are found on most continents, evidence for large scale rifting about 750 Ma. As early as 850 to 800 Ma, a rift developed between the continental masses of present-day Australia, East Antarctica, India and the Congo and Kalahari cratons on one side and later Laurentia, Baltica, Amazonia and the West African and Rio de la Plata cratons on the other. This rift developed into the Adamastor Ocean during the Ediacaran.

Around 550 Ma, near the boundary between the Ediacaran and Cambrian, the first group of cratons fused again with Amazonia, West Africa and the Rio de la Plata cratons during the Pan-African orogeny, which caused the development of Gondwana.

In a separate rifting event about 610 Ma, the Iapetus Ocean formed. The eastern part of this ocean formed between Baltica and Laurentia, the western part between Amazonia and Laurentia. Because the timeframe of this separation and the partially contemporaneous Pan-African orogeny are difficult to correlate, it might be that all continental mass was again joined in one supercontinent between roughly 600 and 550 Ma. This hypothetical supercontinent is called Pannotia.

Influence on paleoclimate and life
Unlike later supercontinents, Rodinia would have been entirely barren. Rodinia existed before complex life colonized on dry land. Based on sedimentary rock analysis, Rodinia's formation happened when the ozone layer was not as extensive as it is today. Ultraviolet light discouraged organisms from inhabiting its interior. Nevertheless, its existence did significantly influence the marine life of its time.

In the Cryogenian, Earth experienced large glaciations, and temperatures were at least as cool as today. Substantial areas of Rodinia may have been covered by glaciers or the southern polar ice cap. Low temperatures may have been exaggerated during the early stages of continental rifting. Geothermal heating peaks in crust about to be rifted; and since warmer rocks are less dense, the crustal rocks rise up relative to their surroundings. This rising creates areas of higher altitude, where the air is cooler and ice is less likely to melt with changes in season, and it may explain the evidence of abundant glaciation in the Ediacaran.

The rifting of the continents created new oceans and seafloor spreading, which produces warmer, less dense oceanic crust. Lower density, hot oceanic crust will not lie as deep as older, cool oceanic lithosphere. In periods with relatively large areas of new lithosphere, the ocean floors come up, causing the sea level to rise. The result was a greater number of shallower seas.

The increased evaporation from the larger water area of the oceans may have increased rainfall, which in turn increased the weathering of exposed rock. By inputting data on the ratio of stable isotopes 18O:16O into computer models, it has been shown that in conjunction with quick weathering of volcanic rock, this increased rainfall may have reduced greenhouse gas levels to below the threshold required to trigger the period of extreme glaciation known as Snowball Earth. Increased volcanic activity also introduced into the marine environment biologically active nutrients, which may have played an important role in the development of the earliest animals.

title: Rodinia


text:
Valerian (emperor)

Valerian (, ; Publius Licinius Valerianus; c. 199 – 260 or 264) was Roman emperor from 253 to spring 260 AD. Valerian is known as the first Roman emperor to have been taken captive in battle, captured by the Persian emperor Shapur I after the Battle of Edessa, causing shock and instability throughout the Roman Empire. The unprecedented event and his unknown fate generated a variety of different reactions and "new narratives about the Roman Empire in diverse contexts".

Origins and rise to power
Unlike many of the would-be emperors and rebels who vied for imperial power during the Crisis of the Third Century, Valerian was of a noble and traditional senatorial family. Details of his early life are sparse, except for his marriage to Egnatia Mariniana, with whom he had two sons: Publius Licinius Egnatius Gallienus (his co-emperor and later successor) and Licinius Valerianus.

Valerian was consul for the first time either before AD 238 as a Suffectus or in 238 as an Ordinarius. In 238 he was princeps senatus, and Gordian I negotiated through him for senatorial acknowledgement for his claim as emperor. In 251 AD, when Decius revived the censorship with legislative and executive powers so extensive that it practically embraced the civil authority of the emperor, Valerian was chosen censor by the Senate, though he declined to accept the post. During the reign of Decius he was left in charge of affairs in Rome when that prince left for his ill-fated last campaign in Illyricum. Under Trebonianus Gallus Valerian was appointed dux of an army probably drawn from the garrisons of the German provinces which seems to have been ultimately intended for use in a war against the Persians.

However, when Trebonianus Gallus had to deal with the rebellion of Aemilianus in 253 AD, he turned to Valerian for assistance in crushing the attempted usurpation. Valerian headed south but was too late: Gallus was killed by his own troops, who joined Aemilianus before Valerian arrived. The Raetian soldiers then proclaimed Valerian emperor and continued their march towards Rome. Upon his arrival in September, Aemilianus's legions defected, killed him and proclaimed Valerian emperor. In Rome, the Senate quickly acknowledged Valerian.

Rule and fall
Valerian's first act as emperor was to appoint his son Gallienus augustus, thus making him co-emperor. Early in his reign, affairs in Europe went from bad to worse, and the whole West fell into disorder. In the East, Antioch had fallen into the hands of a Sassanid vassal and Armenia was occupied by Shapur I (Sapor). Valerian and Gallienus split the problems of the empire between them, with the son taking the West, and the father heading East to face the Persian threat.

In 254, 255, and 257, Valerian again became Consul Ordinarius. By 257, he had recovered Antioch and returned the province of Syria to Roman control. The following year, the Goths ravaged Asia Minor. In 259, Valerian moved on to Edessa, but an outbreak of plague killed a critical number of legionaries, weakening the Roman position, and the town was besieged by the Persians. In 260, probably in June, Valerian was decisively defeated in the Battle of Edessa and held prisoner for the remainder of his life. Valerian's capture was a tremendous defeat for the Romans.

Persecution of Christians
While fighting the Persians, Valerian sent two letters to the Senate ordering that firm steps be taken against Christians. The first, sent in 257, commanded Christian clergy to perform sacrifices to the Roman gods or face banishment. The second, the following year, ordered the execution of Christian leaders. It also required Christian senators and equites to perform acts of worship to the Roman gods or lose their titles and property, and directed that they be executed if they continued to refuse. It also decreed that Roman matrons who would not apostatize should lose their property and be banished, and that civil servants and members of the Imperial household who would not worship the Roman gods should be reduced to slavery and sent to work on the Imperial estates. This indicates that Christians were well-established at that time, some in very high positions.

The execution of Saint Prudent at Narbonne is taken to have occurred in 257. Prominent Christians executed in 258 included Pope Sixtus II (6 August), Saint Romanus Ostiarius (9 August) and Saint Lawrence (10 August). Others executed in 258 included the saints Denis in Paris, Pontius in Cimiez, Cyprian and others in Carthage and Eugenia in Rome. In 259 Saint Patroclus was executed at Troyes and Saint Fructuosus at Tarragona. When Valerian's son Gallienus became emperor in 260, the decree was rescinded.

Death in captivity
Eutropius, writing between 364 and 378 AD, stated that Valerian "was overthrown by Shapur king of Persia, and being soon after made prisoner, grew old in ignominious slavery among the Parthians." An early Christian source, Lactantius (thought to be virulently anti-Persian, thanks to the occasional persecution of Christians by some Sasanian monarchs) maintained that, for some time prior to his death, Valerian was subjected to the greatest insults by his captors. For example, being used as a human footstool by Shapur when mounting his horse. According to this version of events, after a long period of such treatment, Valerian offered Shapur a huge ransom for his release.

In reply (according to one version), Shapur was said to have forced Valerian to swallow molten gold (the other version of his death is almost the same but it says that Valerian was killed by being flayed alive) and then had Valerian skinned and his skin stuffed with straw and preserved as a trophy in the main Persian temple. It was further alleged that it was only after a later Persian defeat against Rome that his skin was given a cremation and burial. The captivity and death of Valerian has been frequently debated by historians without any definitive conclusion.

According to the modern scholar Touraj Daryaee, contrary to the account of Lactantius, Shapur I sent Valerian and some of his army to the city of Bishapur or Gundishapur where they lived in relatively good conditions. Shapur used the remaining soldiers in engineering and development plans. Band-e Kaisar (Caesar's dam) is one of the remnants of Roman engineering located near the ancient city of Susa. In all the stone carvings on Naghshe-Rostam, in Iran, Valerian is represented holding hands with Shapur I, a sign of submission. According to the early Persian Muslim scholar Abu Hanifa Dinawari, Shapur settled the prisoners of war in Gundishapur and released Valerian, as promised, after the construction of Band-e Kaisar.

It has been alleged that the account of Lactantius is coloured by his desire to establish that persecutors of the Christians died fitting deaths; the story was repeated then and later by authors in the Roman Near East fiercely hostile to Persia.

The joint rule of Valerian and Gallienus was threatened several times by usurpers. Nevertheless, Gallienus held the throne until his own assassination in 268 AD.

Family

 * Gallienus
 * Licinius Valerianus was another son of Valerian I. Consul in 265, he was probably killed by usurpers, some time between the capture of his father in 260 and the assassination of his brother Gallienus in 268.

In popular culture

 * Valerian appears in Harry Sidebottom's historical fiction series of novels Warrior of Rome.
 * He also appears in Anthony Hecht's poem "Behold the Lilies of the Field" in the collection The Hard Hours.
 * Valerian appears in Joseph of Anchieta’s play Auto de São Lourenço as one of the main characters. In Act III, Valerian is killed for being responsible for the persecution and killing of Saint Lawrence, in the year 258 AD.

title: Valerian (emperor)