Cassare or calissare (from Portuguese casar, "to marry") was the term applied to the marriage alliances setup between European and African slave traders.[1][2] Cassare created political and economic bonds. It was a pre-European practice used to integrate the "other" from a differing African tribe. Powerful West African groups used these marriages as an alliance used to strengthen their trade networks with European men by marrying off African women from families with ties to the slave trade. Early on in the Atlantic Slave trade, these marriages were common.[3] The marriages were even performed using African customs, which Europeans did not object to, seeing how important the connections were.[4] African wives could receive money and schooling for the children they bore by European men. Wives could also inherit slaves and property from their husbands when they returned to Europe or died.[5]
Many coastal ethnic groups in Africa, such as the Ga and Fante, used this system to gain political and economic advantages.[6][7] It enabled Africans to trust strangers, like the Europeans, when dealing within their trade networks. It made the transition between stranger and trade partner a lot smoother.[8]