The Jolof Empire (French: Djolof or Diolof), also known as the Wolof or Wollof Empire, was a West African state that ruled parts of Senegal from 1350 to 1549. Following the 1549 Battle of Danki, its vassal states were fully or de facto independent; in this period it is known as the Jolof Kingdom. This was largely conquered by the imamate of Futa Jallon in 1875 and its territories fully incorporated into French West Africa by 1890.