W African coast between the Volta & Niger rivers, on the Bight of Benin: its ports were the former centers of the African slave trade
See Slave Coast in American Heritage Dictionary 4
(slāv)
A region of coastal western Africa along the Bight of Benin roughly corresponding to modern-day Benin and Togo. It was notorious as the exportation base for slaves from the 16th century to the early 19th century.