This entry from Encyclopedia Britannica features Nat Turner, a black American slave who led the only effective, sustained slave rebellion (August 1831) in U.S. history. Spreading terror throughout the white South, his action set off a new wave of oppressive legislation prohibiting the education, movement, and assembly of slaves and stiffened proslavery, antiabolitionist convictions that persisted in that region until the American Civil War (1861-65).