Who controlled the military forts through most of the civil war?

a: union forces
b: confederate forces
c: native american tribes
d: they were abandoned.

The correct answer is B.

During the Civil War, almost no military installations remained in the hands of the Union in the South.

The correct answer is A

Explanation:

I just did this question and I got it right.

The correct answer is - a province of Mexico.

In the period when Mexico gained its independence from Spain, Texas was still part of Mexico and it was one of its provinces. This change soon after though when the United States managed to win over the Texas territory from Mexico and incorporate it into their own territory. Even though Mexico has been trying its best to keep Texas or win it back, it did not had the Spanish support anymore and the United States were much stronger military force so they had to accept the fact that it is a territory that is lost forever.