The document summarizes Reconstruction in the United States from 1865 to 1877 following the Civil War. It describes the tensions between Presidential and Congressional Reconstruction over how to reunite the country and integrate freed slaves. Key events included the 13th, 14th, and 15th Amendments abolishing slavery and granting citizenship and voting rights to black men, as well as the rise of Jim Crow laws and the Ku Klux Klan restricting those new rights in the South. Reconstruction ultimately ended in 1877 with the Compromise that resolved the disputed 1876 presidential election in favor of Republicans.