The correct option is D.
Many African Americans during World War I found work in northern cities.
Why did the African Americans move to Northern cities?
Driven from their homes by unsatisfactory economic opportunities and harsh segregationist laws, many Black Americans headed north, where they took advantage of the need for industrial workers that arose during the First World War.
Did African Americans move to the North during World War I?
Whether their motivation was economic, political, individual, or communal, immense numbers of African Americans streamed northward. By one estimate, roughly a half-million southern blacks migrated to northern cities between 1915 and 1920, and between 750,000 and one million left the South in the 1920s.
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