They Came Before Columbus - reveals a compelling, dramatic, and superbly detailed documentation of the presence and legacy of Africans in ancient America. Examining navigation and shipbuilding; cultural analogies between Native Americans and Africans; the transportation of plants, animals, and textiles between the continents; and the diaries, journals, and oral accounts of the explorers themselves, Ivan Van Sertima builds a pyramid of evidence to support his claim of an African presence in the New World centuries before Columbus.