The right answer is A. The Great Migration. After World War II, rural southern blacks began moving to the urban North and Midwest in large numbers in search of better jobs, housing, and greater social equality. The massive influx of African American migrants overwhelmed the resources of urban governments and sparked racial conflicts. In order to cope with the new migrants and alleviate racial tension, cities constructed massive public-housing projects that segregated African Americans into overcrowded and poor neighborhoods.
