could you sum this up for me: During President Johnson's reconstruction plan, the response from the South varied. Although some Southern states accepted the plan, others resisted it, fearing the loss of their power and the implementation of policies they deemed unfavorable. The South's resistance led Congress to take control of Reconstruction. Congress implemented the Reconstruction Act of 1867, which divided the South into five military districts and effectively placed Union troops in charge. This move was an attempt to ensure the successful transition of the Southern states towards equality and freedom for African Americans. Additionally, the Congress regained control over Reconstruction by granting African American men the right to vote with the Fifteenth Amendment. Radical reconstruction differed from earlier plans by taking a more aggressive approach towards ensuring the civil rights of African Americans. It aimed to dismantle the power structures that had previously upheld slavery and ingrained racism. The effects of radical reconstruction were profound. In the short term, it brought forth significant political changes, including the election of African American officials and increased political participation among African Americans. However, despite its aspirations, the backlash against radical reconstruction ultimately led to the rollback of many gains achieved during this period, as forces of white supremacy regained power in the South through the implementation of discriminatory laws and practices like Jim Crow segregation. Nonetheless, radical reconstruction remains a significant chapter in American history, highlighting the ongoing struggle for equality and justice.