African Kings & Black Slaves: Early Modern Atlantic History

As early as 1441, and well before other European countries encountered Africa, small Portuguese and Spanish trading vessels were plying the coast of West Africa, where they conducted business with African kingdoms that possessed significant territory and power. In the process, Iberians developed an understanding of Africa's political landscape in which they recognized specific sovereigns, plotted the extent and nature of their polities, and grouped subjects according to their ruler.