Why did segregation hurt the southern economy?

Which of the following allowed the government to stop a foreigner from becoming a citizen, presidential power to throw anyone he wanted out of the u. s. and that it was a crime to criticize the government? the alien and sedition act the xyz affair the 12th amendment marbury v madison

Explain the importance of president harry truman's order to integrate the u. s. military and the federal government.

How did the results of wwi benefit the u. s.?