The Kanem–Bornu Empire existed in areas which are now part of Nigeria, Niger, Cameroon, Libya and Chad. It was known to the Arabian geographers as the Kanem Empire from the 8th century AD onward and lasted as the independent kingdom of Bornu (the Bornu Empire) until 1900.
The Kanem Empire (c. 700–1380) was located in the present countries of Chad, Nigeria and Libya. At its height, it encompassed an area covering not only most of Chad but also parts of southern Libya (Fezzan) and eastern Niger, northeastern Nigeria and northern Cameroon. The Bornu Empire (1380s–1893) was a state in what is now northeastern Nigeria, in time becoming even larger than Kanem, incorporating areas that are today parts of Chad, Niger and Cameroon.
The early history of the empire is mainly known from the Royal Chronicle, or Girgam, discovered in 1851 by the German traveller Heinrich Barth. Remnant successor regimes of the empire, in form of Borno Emirate and Dikwa Emirate, were established around 1900 and still exist today as traditional states within Nigeria.