How did the United States qnd the Soviet Union become cold war adversaries? (If you can please list a couple of examples or evidence)​

The Soviet Union and the United States stayed far apart during the next three decades of superpower conflict and the nuclear and missile arms race. Beginning in the early 1970s, the Soviet regime proclaimed a policy of détente and sought increased economic cooperation and disarmament negotiations with the West.

Explanation:

It's called the Cold War because no actual military engagement took place between the United States and the USSR (Union of Soviet Socialist Republics). Instead, fighting took place in proxy wars conducted in "third-world" countries.