Used to corroborate: named after the Borno Emirate, capital Maiduguri; formed 1976 from North-Eastern State, Yobe separated 1991; borders three countries; Kanem Empire from the 700s, Bornu Empire from the late 1300s; Fulani jihad; Kanemi dynasty; Rabih az-Zubayr (1893, killed 1900); British from 1902, Maiduguri capital 1907; German Bornu and the Northern Cameroons (joined Nigeria 1961); peoples; vegetation; Lake Chad; Yobe River; Chad Basin National Park.