Help me with this u. s history hw please. You have to describe the historical context surrounding these documents and identify and explain the relationship between these events and the turning point please and thank u

Prior to the presence of europeans on the continent, the slave trade in africa a) did not exist in any form. b) was limited to internal trade only. c) included the trans-saharan and indian ocean slave trade. d) was rarely needed due to the lack of an agricultural economy.