Greer County, Oklahoma

Mangum and the Oklahoma-Texas border dispute - from Greer County's unique border dispute history (before Oklahoma statehood, Greer County was claimed by both the United States and Texas - Texas governed the area as Greer County, Texas from 1860 to 1896 when the US Supreme Court ruled in favor of the federal government, incorporating it into Oklahoma Territory and making it one of the few counties in American history to switch state jurisdiction by court order) to the county's southwest Oklahoma wheat and cotton landscape (the red plains terrain supports wheat, cotton, and cattle operations across the rolling red hills and creek valleys of extreme southwest Oklahoma near the Texas panhandle border).