The wreck of the last slave ship ever to reach American shores has been found in a river delta near Mobile, Alabama, according to the state's historical commission. In 1860, on the eve of the American Civil War, the schooner Clotilda took aboard 110 individuals in West Africa and sailed across the Atlantic to deliver them to slaveowners in Mobile. After they were unloaded, the ship was burned outside of the port. The transatlantic slave trade had already been banned in the U.S. for decades, and at the time of the landing, importing African people for purposes of slavery was...