Answer:
A
Step-by-step explanation:
Changes in immigration policy helped to encourage the Great Migration by providing easier access to the cities of the North, Midwest, and West. This was largely due to the Immigration Act of 1924, which placed strict quotas on immigrants from certain countries. This act, combined with the war-time labor shortages of World War I, provided an impetus for African Americans to take advantage of the economic opportunities available in Northern and Midwestern cities. Additionally, the establishment of the National Origins Quota in 1929 further encouraged African Americans to migrate, as it removed the quotas that had previously limited the number of African Americans allowed to migrate. Moreover, the Social Security Act of 1935 provided financial assistance to those who had migrated, further incentivizing African Americans to make the move to northern and Midwestern cities.