Well during the late '40s and '50s there were the increased tensions with the Soviet Union over what would happen to Germany and how it would be split. The Soviet Union wanted a lot because Stalin was a paranoid, mean guy who never really trusted anybody and resented the other allies from stalling their attacks in the West. So the U.S.Did what they could to stop the Soviets.
When Berlin was surrounded by the Soviets, we started the Berlin airlift and hindered any attempt by the Russians. During the '50s we began a policy of containment which stated that the U.S.Would help any country being threatened by communist aggressors. This got us in a little trouble in Korea and Vietnam.
There was also mccarthyism happinging at home.Sen. Joe McCarthy stated that there were communists in the goverment(OH NO! ) so there began a time where people were put on trial and even executed, as in the Rosenburgs Answer American policy of containment was developed by George Kennan.It was meant to keep Soviet expansion in check in Eastern Europe, but not intended for use in Asia (Korea and Vietnam).
Despite this, Americans were involved in both Korea and Vietnam. The Truman Doctrine arose from the ideas of contaiment. The Truman Doctrine was created to aid Greece and Turkey to prevent their fall to communism.
The United States experienced the Red Scare, in which McCarthy-ism and "witch hunts" sought to purge the US government of all communists Answer Containment of communism. At this point the belief was that communism was an international movement that had to be stopped immediately wherever it started: like a cancer. This was accomplished not just militarily but also economically through the Marshall Plan for Western Europe (which was extended to the Soviets and Eastern Europe, but they turned it down obviously) and the rebuilding of Japan as a democractic power in the Far East.
There was also a much greater impetus from the US to found and take active part in the United Nations.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.