What led to the Cold War between the United States & Soviet Union?

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One of the major reasons was that both of their governments worked very differently. While the United States’ government was based upon capitalism and democracy while the Soviet Union’s was based upon communism and dictatorship.

Explanation:

The Cold War between the U.S. and Soviet Union originated from postwar disagreements, conflicting ideologies, and fears of expansionism.

Explanation:

  brain

not sure might be he acquired the entire oregon territory from great britain