アメリカ合衆国憲法修正第13条
1865 ushered in the period of Southern Reconstruction, during which time, the Thirteenth Amendment to the United States Constitution, outlawing slavery, was passed. Ten former Confederate states were divided into five military districts. As a condition of readmission to the Union, the former Confederate states were required to ratify the Fourteenth Amendment to the Constitution, which granted citizenship to all people born in the U.S. regardless of race.