Why did the number of strikes greatly increase in the years immediately following World War I? The Ku Klux Klan engaged in criminal activity against workers. Activism was the social norm in the years after the war. Strikes would no longer interfere with the war effort. Employers hired many socialists and communists.

The number of unions striking after World War 1 was because the union thought the workers would return to their depressed status. The government cancelled their defense contracts and were laying off people. The began to strike because the it would no longer interfere with the war effort. They had a no-strike agreement with the government while the war was going on. The correct answer will be C.