What was a major effect that world war ii had on the u.s. economy?

The Public level debt, Taxes and Inflation increase on the other hand consumption and investment decrease.

Explanation:

Economic benefits of World War 2 were the Industrial renewal and large scale employment rise to 10% in both the military and industries which aided the military.World war 2 took place from 1939-1945 which involved 30 countries. American factories retooled to produce goods to support the war. Also, it destroyed the economy by making weapons and ammunition very expensive.

It would be as primary source documents that are useful in the study of history" that historians consider letters and journals, since these provide and "unfiltered" view into the lives and minds of people who lived in the past.