Reconstruction began after the Civil War to reintegrate the Confederate states into the Union and establish new civil and political systems. President Lincoln's lenient 10% Plan was rejected by Radical Republicans as not doing enough to establish rights for freed slaves. The Radicals gained control of Congress and passed more sweeping laws and constitutional amendments over President Johnson's vetoes. However, the failure to fully enforce these laws and the Compromise of 1877, which ended the last federal troops' presence in the South, allowed Southern states to impose Jim Crow laws and effectively end the progress of Reconstruction.