"In 1860, a ship called the Clotilda was smuggled through the Alabama Gulf Coast, carrying the last group of enslaved people ever brought to the U.S. from West Africa. Five years later, the shipmates were emancipated, but they had no way of getting back home. Instead they created their own community outside the city of Mobile, where they spoke Yoruba and appointed their own leaders, a story chronicled in Zora Neale Hurston's Barracoon. That community,...