The 13th Amendment to the United States Constitution, ratified in 1865, abolished slavery and involuntary servitude, except as punishment for a crime. This amendment marked a significant turning point in American history, as it legally ended the institution of slavery and laid the groundwork for future civil rights advancements. It was a critical element during the Reconstruction era, as it aimed to address the rights of newly freed African Americans and influenced various initiatives like the Freedmen's Bureau.