C. Political power had shifted away from Western Europe and toward the USA and Soviet Union.
Explanation:
The Cold War is a period that lasted from the end of the World War II and up until the begging of the 1990's. It was a period of tension and competition between the United States and the Soviet Union which almost led to another world war. This period was marked almost exclusively by the actions of these two countries, while all others were in their shade or controlled by them.
Western Europe was the region that dominated the world until the World War II, but after it ended, the region lost its global power. On the other side, the United States and the Soviet Union were on the rise, being the most dominant military forces, with thriving industries and vast resources on disposal. Also, these two countries were the leaders of the two global movements, the democracy and capitalism versus the communism and command economy.
