1971- 1972.............the time frame that book came out about the Ishango bone.........


During the Congo Crisis, Belgian forces aided Mobutu in a coup against the nationalist government of Patrice Lumumba in 1960 to take control of the government. Lumumba was the first leader in the country to be democratically elected, but he was subsequently deposed in a coup d’état organised by Colonel Mobutu and executed by a Katangese firing squad led by Julien Gat, a Belgian mercenary,^[1] Mobutu then assumed the role of army chief of staff,^[2] before taking power directly in a second coup in 1965. As part of his program of "national authenticity," Mobutu changed the Congo's name to Zaire in 1971 and his own name to Mobutu Sese Seko in 1972.