What differences separated the Soviet Union from the United States in the years following World War II?

There were several differences that separated the Soviet Union and the US after World War II.

1) The US had a democratic political system while the Soviet Union used a communist system - The communist system revolves around the government having significant control over the media, economy, and other facets of society. On the other hand, a democratic system gives people the power to pick their representatives.

2) The US favored capitalism while the Soviet Union favored a command economy. - The command economy resulted in the Soviet Union's central government telling businesses what they can and cannot produce. America's capitalist system allows competition between businesses and little government interference decide the direction of the US economy.