Answer:
Racism and lack o jobs is the correct answer.
Step-by-step explanation:
The migration of more than five million African Americans out of Us to the Midwest, northeast and west is known as Great Migration. The main reason for their migration was racism and job opportunities in industrial cities. When African Americans moved to the south in 60's onward, it was known s New Great Migration. The black Americans who moved to north migrated back to south due to de-industrialisation in mid western and northeastern cities. The main factors for migration toward south was better racial relations and growth of jobs. Family ties was also an important factor.