What key disagreement caused a collapse in the alliance between the United States and the Soviet Union

after World War II?

A. The Soviet Union wanted technology and the military to expand, while the United States wanted

to focus on recovery.

B. The Soviet Union supported communism, while the United States supported democracy and a

free market

C. The Soviet Union supported Italy, Germany, and Britain, while the United States allied with China and France.

D. The Soviet Union wanted isolationism in foreign policy, while the United States shifted to active

engagement.

B. The Soviet Union supported communism, while the United States supported democracy and a free market.

Explanation:

The Soviet Union was a totalitarian state with a central planning economy, state atheism in religion policy, where private property did not existing and tried to export the ideas of Real Socialism to other countries like China, Vietnam, Cuba and many african countries, whereas the United States is a democracy with a market economy and secularization in religion policy, in which individual freedom and private initiative are considered important.