Answer:
C) constitutional republic
Explanation:
The framers of the constitution is a system whereby the tried to balance the power between the government and the individual rights. They believed that, if all the power is left to the government, there is high tendency of it being abused. In order to counter this, they choose federalism as a system of government by creating the Senate. This helps to protect the opinion of minorities. This is backed by the constitution.
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.
While the threat of mutually assured destruction seemed to fade with the end of the Cold War, the threat of "<span>B. the proliferation of weapons of mass destruction"</span> still exists