In what ways did communism have an impact on world history in the first half of the twentieth century?

The ideology of Communism spread after Russia adopted this political and economic ideology in 1917. Communism had a major impact on the world's history during the first half of the Twentieth century.

Explanation:

Communism was a political and economic ideology conceived by Karl Marx in the nineteenth century.

In 1917, after Vladimir Lenin rose to power in Russia, he adopted the ideology of communism. Soon, communism began to spread across the borders of Russia to China, Germany, Romania, Czechoslovakia, North Korea, Poland, and many others.

The spread of communism worldwide became a threat for America. It was this fear that caused the Cold War between Russia and America from 1947 to 1953.