During World War II, more than one million African Americans migrated from the South to northern cities. What was the main force driving this migration?
Group of answer choices

Discrimination against African Americans in the South peaked during the war.

The government provided tax breaks to families migrating to urban areas.

Demand for new labor in the defense industry increased in the northern cities.

Migration was more affordable due to the completion of the Interstate Highway System.

During the World War II, many African Americans from the South headed to the Northern cities because of the "Jim Crow" policy. This was, particularly, a segregation policy that gave the whites supremacy over all races. The laws under this policy were very harsh and rigid against the African Americans thus, such kind of discrimination led to their migration (escape) to the North.

Once they were able to settle in the North, they took advantage of the employment opportunities such as jobs in the industries.

Thus, this explains the answer.