The Great Depression forced African Americans remaining in the South to move North did the great depression affect the Great Migration. Hence, option B is correct.
How did the Great Depression affect black Americans?
African Americans suffered the most during the Great Depression, despite the fact that no group was exempt from its economic destruction. African Americans were the first to have their hours and jobs reduced, according to the adage "last hired, first fired," and they had the highest unemployment rate in the 1930s.
While white unemployment rates in northern and midwestern cities reached as high as 25%, the jobless rate for black workers in Chicago, New York, and Pittsburgh was 50%, and it reached 60% in Philadelphia and Detroit.
However, no group was struck as heavily as African Americans. About half of African Americans were unemployed by 1932. White residents in numerous Northern communities demanded.
Thus, option B is correct.