In the 1940s and after , they moved to the West Coast for jobs in the defense industry .
These were periods of the Great Migration from the South by African Americans , who first moved to jobs in industrial cities in the North and Midwest .
In the 1940s and after , African Americans moved to the West Coast for jobs in the defense industry .
These were periods of the Great Migration from the South by African Americans , who first moved to jobs in industrial cities in the North and Midwest .