structural:expansion
Practices by region

Like most other regions of the world, slavery and forced labour existed in many kingdoms and societies of Africa for hundreds of years. Ugo Kwokeji has called early European reports of slavery throughout Africa in the 1600s unreliable, saying they conflated various forms of servitude with chattel slavery.

The best evidence of slave practices in Africa come from the major kingdoms, particularly along the coast, and there is little evidence of widespread slavery practices in stateless societies. Slave trading was mostly secondary to other trade relationships; however, there is evidence of a trans- Saharan slave trade route from Roman times which persisted in the area after the fall of the Roman Empire. However, kinship structures and rights provided to slaves (except those captured in war) appears to have limited the scope of slave trading before the start of the trans-Saharan slave trade, Indian Ocean slave trade and the Atlantic slave trade.