What was the main difference between the two sides in the cold war?

The main difference between the two sides in the Cold War was their ideological beliefs: the United States championed capitalism and liberal democracy, while the Soviet Union promoted communism and a centralized, planned economy. This ideological divide led to a geopolitical struggle for influence, with each side seeking to expand its economic and political systems globally. Additionally, the Cold War was characterized by a competition for military superiority and influence in various regions, often manifesting in proxy wars rather than direct conflict.