The Sao civilization (also called So) flourished in

Central Africa Central Africa (French language, French: ''Afrique centrale''; Spanish language, Spanish: ''África central''; Portuguese language, Portuguese: ''África Central'') is a subregion of the African continent comprising various countries accordin ...

from the 6th century BCE or 5th century BCE, to as late as the 16th century AD. The Sao lived by the

Chari River The Chari River, or Shari River, is a long river, flowing in Central Africa. It is the main source of water of Lake Chad, which is located at the junction of four countries: Nigeria, Niger, Chad, and Cameroon. Geography The Chari River flows f ...

basin in territory that later became part of

Cameroon Cameroon, officially the Republic of Cameroon, is a country in Central Africa. It shares boundaries with Nigeria to the west and north, Chad to the northeast, the Central African Republic to the east, and Equatorial Guinea, Gabon, and the R ...

and

Chad Chad, officially the Republic of Chad, is a landlocked country at the crossroads of North Africa, North and Central Africa. It is bordered by Libya to Chad–Libya border, the north, Sudan to Chad–Sudan border, the east, the Central Afric ...

. They were the earliest civilization to have left clear traces of their presence in the territory of modern Cameroon. Sometime around the 16th century, conversion to Islam changed the cultural identity of the former Sao. Today, several ethnic groups of northern Cameroon and southern Chad, but particularly the Sara and Kotoko, claim descent from the civilization of the Sao.

Origins

The Sao civilization is hypothesized to have descended from the earlier Gajiganna culture of

Lake Chad Lake Chad (, Kanuri language, Kanuri: ''Sádǝ'', ) is an endorheic freshwater lake located at the junction of four countries: Nigeria, Niger, Chad, and Cameroon, in western and central Africa respectively, with a catchment area in excess of . ...

, which dated from about the 18th to the 9th century BCE, eventually taking Sao form between the 11th and 4th centuries BCE, such that, by the end of the first millennium BCE, Sao presence was well established around Lake Chad and near the

. The city-states of the Sao reached their apex sometime between the ninth and fifteenth centuries CE. Although some scholars estimate that the Sao civilization south of Lake Chad lasted until the fourteenth or fifteenth century, the majority opinion is that it ceased to exist as a separate culture sometime in the 16th century after the expansion of the

Bornu Empire Bornu may refer to: * Bornu Empire, a historical state of West Africa * Borno State, Nigeria {{disambig