Answer:
the answer is A. compare against othera
Explanation:
how do i know that this is the right answer guess what i dont
The Truman Doctrine was an American foreign policy whose stated purpose was to contain Soviet geopolitical expansion during the Cold War. It was announced to Congress by President Harry S. ... More generally, the Truman Doctrine implied American support for other nations thought to be threatened by Soviet communism.
Because it was a union stronghold in the confederate states.