A Little History.
When Texas was part of Mexico, it was unsettled. Very few Mexicans lived here due to a charming group of peoples called the Kiowas, Apaches and Commanches. When Mexico instituted the settlement programs, there were more English speaking settlers than anyone else in Texas.
Thus one could make the arguement that Texas has always been a majority English region, insofar as European languages are concerned.
Biting the hand that feeds IT
