East Texas was the most populated part of the state in those days and basically the only part that had slaves. Not every county was that way though---several counties in East Texas were abolitionist counties---Angelina county being one.
Texas came into the union by treaty and retained certain rights that other states did not have. One of those rights was, and still is, the right to split into ant least 5 states.
The German and Chek country west of let's say on a north south line from Bay City, in the South to Greenvile in the North were not of the old South heritage---speaking, and still do, their native European tongue. There were militias formed in some of these areas that were pro-union.
Sam Houston was pro-union.
It was conceivable that Texas could have torn itsownself apart and some parts stay in the Union should the war have shown it was necessary.
Sam resigned as Governor in protest to secession.
Blessings
