Which groups had the largest role in the radical reconstruction?

The groups that played the largest role in Radical Reconstruction were the Radical Republicans in Congress, who pushed for aggressive measures to ensure civil rights and voting rights for newly freed African Americans. This movement was supported by various abolitionist groups and African American leaders, such as Frederick Douglass, who advocated for equality and integration. Additionally, the Freedmen's Bureau played a crucial role in assisting newly freed slaves with education, employment, and legal support. Together, these groups aimed to transform Southern society and ensure lasting changes following the Civil War.