Editing Greer County, Oklahoma (section)

==History==
After a dispute over the 1819 [[Adams-Onís Treaty]] and the related 1828 [[Treaty of Limits (Mexico–United States)|Treaty of Limits]], the governments of both the United States and the state of Texas claimed ownership of some {{convert|1.5|e6acre|km2}} in what was then operated as [[Greer County, Texas]]. The county was named for former Texas lieutenant governor, [[John Alexander Greer|John A. Greer]].<ref name="EOHC-GreerCo">[http://www.okhistory.org/publications/enc/entry.php?entry=GR025 Wilson, Linda D. ''Encyclopedia of Oklahoma History and Culture''. "Greer County.] Retrieved March 5, 2015.</ref> Litigation followed, and in the case of ''United States v. State of Texas'' {{ussc|162|1|1896}}, with a ruling issued on March 16, the [[Supreme Court of the United States|Supreme Court]], having original jurisdiction over the case, decided in favor of the United States.

The county was assigned to the Oklahoma Territory on May 4, 1896. When Oklahoma was admitted as a state, Greer County was established according to its current boundaries; the remaining former county area was organized as [[Harmon County, Oklahoma|Harmon]], [[Jackson County, Oklahoma|Jackson]], and part of [[Beckham County, Oklahoma|Beckham]] counties. The town of Mangum, designated as the county seat in 1886 when it was part of Texas, continued as the seat of Greer County, Oklahoma.<ref name="EOHC-GreerCo"/> From its establishment until at least 1903, Greer County was a [[Sundown town|sundown county]], prohibiting African Americans from living in the county.<ref>{{cite news|title=Ban Placed on Negroes|work=Scott County Kicker|location=Benton, Missouri|date=September 5, 1903|page=2|url=https://chroniclingamerica.loc.gov/lccn/sn89066234/1903-09-05/ed-1/seq-2/|via=Chronicling America|quote=Because the ban has been placed on the negroes by the citizens of Greer county, Okla., there will be an estimated loss of 5,000 bales of this year's cotton crop. Greer county, which, until a few years ago, was a part of Texas, is one of the big cotton producers of the territory. This year the farmers raised 20 per cent. increased acreage and a 15-per-cent. increase yield, but there is a labor famine. The growers have been threatened by the citizens in general upon every attempt to import negroes, but unless the necessary laborers are secured in the immediate future the financial loss will be great. The growers now have a movement on foot to bring 100 Mexican families to pick the cotton crop. Since the organization of Greer county no negroes have been allowed to live within its boundaries.}}</ref>

Originally developed for agriculture, the rural county had its peak of population in 1930. Mechanization of agriculture reduced the need for farm labor, and the population has declined as people migrated to cities for work.

Among the county attractions is [[Quartz Mountain State Park]] (known from 2002 to 2020 as Quartz Mountain Nature Park), near the community of [[Lone Wolf, Oklahoma|Lone Wolf]].