The Second Great Migration of African Americans from the _[blank]_ to other parts of the United States occurred between 1940 and 1970.

The Second Great Migration of African Americans from the South to other parts of the United States occurred between 1940 and 1970

Explanation:

In the 20th century, this great migration of african American occurs. The movement was from the Southern part of America to the other parts as a rsult of the great economic challenges which they experienced.

Also, as a result of the agricultural boom which occured in other regions thereby creating employment opportunites, it serves as a reason for the migration.