What role did warfare in africa play in the slave trade of the late 18th century

Victorious tribes often sold or traded their prisoners to European slave traders.

Explanation:

The presence of European slavers affected how African societies operated. Many crimes became punishable with enslavement. Wars between native kingdoms often resulted in the taking of prisoners, who were then sold to European traders. These practices were particularly common throughout Western and West-Central Africa. Slavery also helped the kingdoms get rid of political dissidents or finance more wars.