Why was the Cold War not cold ?

The reason it wasn't cold because it was an expression of the cold war, and plus it was mainly because so many people was dying and the war lasted a long time.

Explanation:

During the 1920’s, United States economy boomed unprecedently. Every production was intended for the people of the United States. Electricity, cars, telecommunications are few examples of markets that boomed during that time. However, in the late 1920’s, United States was greatly affected by the Great Depression, due to stock market break down. The country was faced  with a large amount of unemployment