Describe the evolution ofthe atlantic slave trade from 1500-1850. why and how did the slave trade evolve? how did the slave trade fit into the larger history of the transatlantic, or triangular, trading system? from what parts of africawere most enslaved peoples? how did african kingdoms facilitate the slave trade? how many enslaved africans were brought to the new world? how many were specifically brought to british north america? how does olaudah equiano's narrative give us insight into the "middle passage" and the nature of slavery? on what grounds did european slave traders initially justify the slave trade? by 1700, how did most british slave traders and planters justify slavery?