What was a major effect that world war 2 had on the U.S economy?

World War II significantly transformed the U.S. economy by ending the Great Depression and leading to an economic boom. The war effort mobilized millions of Americans into the workforce, drastically increasing production and innovation. Additionally, government spending on military goods and infrastructure created jobs and stimulated growth, ultimately establishing the U.S. as a leading global economic power in the post-war era. This shift also laid the groundwork for the expansion of the middle class and consumer culture in the following decades.