This chapter reviews the historical evidence concerning the development of slavery in eastern Africa, the various forms found in societies on the coast and in the interior, the social and cultural consequences of enslavement, and its ultimate abolition. It then looks at the known and potential archaeological traces of the trajectories of these different systems of slavery, with particular reference to the area along the middle and lower Pangani River, Tanzania. The chapter concludes with a consideration of whether or not (...) it would be possible to discern slavery from the surviving archaeological remains alone, and the implications of this answer for future archaeological investigations of slavery elsewhere in the region. (shrink)