Answer:
Federalism is a system of government in which the same territory is controlled by two levels of government. ... Both the national government and the smaller political subdivisions have the power to make laws and both have a certain level of autonomy from each other.
Explanation:
After the war the new border was the rio grande river and Texas became a state of the United stages
Francis Marion, I believe
Each state had to ratify the Fourteenth Amendment of the Constitution is the correct answer. Good job.