What geographic regions in Texas did Big Eyes know?

The Llano Estacado (Spanish: [ˈʝano estaˈkaðo]), commonly known as the Staked Plains,[2] is a region in the Southwestern United States that encompasses parts of eastern New Mexico and northwestern Texas. One of the largest mesas or tablelands on the North American continent,[2] the elevation rises from 3,000 feet (900 m) in the southeast to over 5,000 feet (1,500 m) in the northwest, sloping almost uniformly at about 10 feet per mile (1.9 m/km).[3]

Explanation:

they were the direct result of some cultural difussion.

oil! is what i am assuming