Reconstruction, spanning from 1865 to 1877, marked a transformative period in American history following the Civil War. This era saw significant political, economic, and social changes as the nation grappled with reunification and the integration of formerly enslaved individuals into society. Key events included the passage of constitutional amendments granting citizenship and voting rights to African Americans, the establishment of the Freedmen's Bureau, and the rise of African American political participation. However, resistance from white Southerners and the emergence of groups like the Ku Klux Klan challenged progress, ultimately leading to the era's end with the Compromise of 1877.