President Abraham Lincoln signs the Thirteenth Amendment to the United States Constitution.

The Thirteenth Amendment to the United States Constitution, ratified on December 6, 1865, formally abolished slavery and involuntary servitude, except as punishment for a crime. As a direct response to the Civil War and a key component of Reconstruction, the amendment was a landmark in American history, ensuring that no person could be legally enslaved within the United States. Proposed by Congress on January 31, 1865, it was one of the Reconstruction Amendments and built upon President Abraham Lincoln’s Emancipation Proclamation, which had only freed slaves in Confederate-held territories. The amendment’s first section explicitly states, “Neither slavery nor involuntary servitude, except as a punishment for crime whereof the party shall have been duly convicted, shall exist within the United States, or any place subject to their jurisdiction.” However, the “punishment clause” later became a point of contention, as it was exploited through systems like convict leasing, disproportionately affecting African Americans. The second section granted Congress the power to enforce the amendment through appropriate legislation, leading to subsequent laws aimed at dismantling remnants of slavery. Despite its passage, the struggle for full racial equality persisted, necessitating the Fourteenth and Fifteenth Amendments and later civil rights movements to combat systemic racism and discrimination.