The Congressional Reconstruction plan was a series of laws and policies established by Congress in the aftermath of the Civil War aimed at rebuilding the South and integrating formerly enslaved people into society. This plan involved the division of Southern states into military districts and required them to create new state constitutions guaranteeing African American males the right to vote. The primary goal was to ensure civil rights and political participation for freedmen, countering the Black Codes that many Southern states enacted to restrict their freedoms.