Thus begins the cold war, which wasn’t a war, but rather the tension that existed between the United States and the Soviet Union. It was based on the fear of a war and lasted for more than 40 years.
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Thus begins the cold war, which wasn’t a war, but rather the tension that existed between the United States and the Soviet Union. It was based on the fear of a third world war and lasted for more than 40 years.

Explanation:

These countries are superpowers. The united states of America showed his weapon power in world war 2 by attacking Hiroshima and Nagasaki by the fat boy(nuclear bomb).

The soviet union also tested many weapons after world war 2. The world feared that there will be another world war because of these two superpowers and it will be more destructive than the previous world war.