Women filled factory jobs. Women's war effort helped bring about passage of the 19th Amendment after the war giving women the right to vote. Black soldiers still served in segregated units. ... In the “Great Migration” thousands of African Americans moved to the North to work in factories
Part of it was because of the Industrial Revolution and the invention of the cotton gin by Eli Whitney.
Answer:
$4trillion
Explanation:
spent more than $ 4 trillion or 36% of its GDP.More than 400,000 U.S. troops were killed in the defeat to defeat Nazi Germany, Italy and Japanese Empire.