Because all you southwesterners eat chili and sleep in pueblos and dream of George Bush.
southwestern region
There are various definitions of the four regions of Texas. El Paso is in the Mountains and Basins region or the Basin and Range region or the Trans-Pecos region or the Fort Bend region, and maybe more.
Big Bend National Park is located in Southwestern corner of Texas on the Mexico border. It is in Brewster County, Texas.
east texas
gulf coastal plain
In the South west region
south
south texas
south west
South Texas.
South or southwest region depending on the context of the question
south of Texas because closest to Mexico. i think