Perhaps the greatest impact of the freedmen's bureau was that it:

Perhaps the greatest impact of the Freedman's Bureau was that it functioned as a model for private and public cooperation and it did require very high standards of accountability from the cooperating agencies. Freedman's Bureau was established after the Civil War. I hope the answer comes to your help.

Contributing factors  leading  to the harlem renaissance were the great migration of african americans to northern cities, which concentratedambitious  people in places where they could encourage each  other, and the first world war, which had created new industrial work opportunities for tens of thousands of people.