The Sao civilization (also called So) flourished in Central Africa from ca. the fourth or sixth century BC to as late as the sixteenth century AD. The Sao lived by the Chari River basin in territory that later became part of Cameroon and Chad.
The Sao culture (also referred to as So) thrived in Central Africa from approximately the fourth or sixth century BC until the sixteenth century AD. The Sao people inhabited the Chari River basin region, which later became part of Cameroon and Chad.