What effect did World War II have on the United States?

For anyone who needs it this is the correct answer!

WW2 caused many famines do go through not only the US but other countries. Especially Third-World Countries. The tax rates went way higher and some foods weren't available to people. Citizens held petitions and protests but that didn't stop the war that was really coming. Many people died on the battlefield as well as in the homes due to starvation and murder.