The United States had a democratic system with multiple parties, while the Soviet Union operated under a single-party system led by the Communist Party. This significant difference shaped the political climates of both nations after World War II. Therefore, the best description is that the U.S. was democratic and the U.S.S.R. had a single-party system. ;
The U.S. had a democratic system characterized by multiple political parties and individual freedoms, while the Soviet Union operated under a single-party system led by the Communist Party. Therefore, the best choice is that the United States had a democratic system, and the Soviet Union had a single-party system.
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