AFRICANGLOBE - Didn’t the Thirteenth Amendment abolish all forms of slavery and involuntary servitude in this country? Not quite. In the shining promise of freedom that was the Thirteenth Amendment, a sharp exception was carved out. Convict leasing was cheaper than slavery, since farm owners and companies did not have to worry about the health of their workers. Angola’s farm operations and other similar prison industries have ancestral roots in the Black chattel slavery of the South.