Question

After World War II, which countries were the two great superpowers of the world?

Answer 1

The United States and the Soviet Union were the two great superpowers after the WW II. The end of WW II also brought the beginning of the Cold War - a state of political and military tension between powers in the Western Bloc (US and its NATO allies) and Eastern Bloc (the Soviet Union and its allies in the Warsaw pact). The term "cold" is used because there were no direct conflict between the two superpowers. It is usually considered that the Cold War begun in 1947 and ended in 1991, with the fall of the Soviet Union and many other communistic regimes. 

Answer 2

After World War II, it was the "United States and the Soviet Union" that were the two great superpowers of the world, since they had been the victorious allies during the war (along with Britain), and immediately began competing in what became known as the Cold War after the conclusion of World War II.