Returning over 4,000,000 soldiers to the workforce and filling the void left by the cancellation of wartime manufacturing contracts.
Answer: Option D.
Step-by-step explanation:
World war I was the war in which many countries of the world were involved. They were divided into two groups and these groups were fighting against one another. The world war I started in 1914 and ended in 1918.
With the end of this war, there was a huge effect on the economy of the United States of America. There were large number of soldiers that returned from the war because of which these soldiers had to be given employment opportunities.