Randy J. Sparks 
Where the Negroes Are Masters [EPUB ebook] 

Annamaboe–largest slave trading port on the Gold Coast–was home to wily African merchants whose partnerships with Europeans made the town an integral part of Atlantic webs of exchange. Randy Sparks recreates the outpost’s feverish bustle and brutality, tracing the entrepreneurs, black and white, who thrived on a lucrative traffic in human beings.