During World War I, many African Americans
living in the South moved to northern cities
primarily because
(1) more workers were needed in industry
(2) prejudice had been eliminated in the North
(3) affirmative action programs provided better
training opportunities
(4) the cost of living in the cities was lower



Answer :

During World War I, many African Americans living in the South moved to northern cities primarily because "(1) more workers were needed in industry" in the north, which was friendlier to blacks as well.