Question

What prompted the United States to join The Cold War.

Answer 1

The Cold War began after the surrender of Nazi Germany in 1945, when the uneasy alliance between the United States and Great Britain on the one hand and the Soviet Union on the other started to fall apart. ... The Americans and the British worried that Soviet domination in eastern Europe might be permanent.

Step-by-step explanation:

Answer 2

Other countries were turning to communism like Russia and the U.S. didn't want other countries to become communist.