Slavery in America didn’t end with the Emancipation Proclamation. It lived on—even after the Civil War had ended and the 13th Amendment had been put into place.
The Civil War brought the Confederate States back into the Union, but the people who lived in the South weren’t through fighting. They were determined to keep things exactly as they were during the heyday of slavery.
They made state laws that let them keep black people in essential servitude – and, as a result, slavery in America lived on for a lot longer than most people realize.