"Austin arrived at Saltillo and was presented an order from the most excellent
vice-president for his arrest and conveyance to Mexico as a prisoner to answer
charges that the government had to make against him, without saying what they
were. In the judicial department there has never been the proper organization,
and it may be said with well founded reason that in this branch there is not, nor
has there been, any government in Texas."
- Explanation to the Public concerning the Affairs of Texas, by Stephen F. Austin
Which principle was Austin describing was violated by Mexico?

A. Popular Sovereignty
B. Republicanism
C. Federalism
D. Separation of powers