One of my favorite books is Cormac McCarthy’s Blood Meridian. This Los Angeles Review of Books article points out something about the west, and Texas in particular that I did not appreciate.
Texas’s true origin story is one of conquest. White settlers arrived in Tejas en masse, often with coffles of slaves, provoking conflicts with Mexico. They fought their war of independence partly because Mexico abolished slavery and the incoming settlers preferred independence or American statehood to Mexican control.