Why was an amendment needed to end slavery I the United states?

An amendment was needed to end slavery in the United States because the institution of slavery was deeply entrenched in the country's laws and economy, particularly in Southern states. The Constitution originally included compromises that allowed slavery to persist, such as the Three-Fifths Compromise and the Fugitive Slave Clause. The abolitionist movement gained momentum over time, culminating in the Civil War, which highlighted the moral and political necessity of a formal legal change. The 13th Amendment, ratified in 1865, was essential to legally abolish slavery and ensure that it could no longer be sanctioned by law.