The fact that Texas is the largest state in the US is the greatest factor that explains why it is isolated both economically and socially, simply because people find it harder to leave the state on a regular basis.
The best answer that supports your question is letter B. Europeans wanted to curb the power of the church and the feudal system made it clear that nobles would write local laws, organize courts and collect taxes. I hope you are satisfied with my answer and feel free to ask for more.