The readmission of Confederate states after the Civil War was
a process defined by Congressional Reconstruction, requiring states to draft new constitutions, ratify the 14th Amendment, and grant suffrage to Black men, all overseen by military rule under the Reconstruction Acts. Tennessee was the first to be readmitted in 1866, while most others followed in 1868, with Virginia, Mississippi, Texas, and Georgia being the last to rejoin by 1870