This 17th-century manuscript map is an early depiction of the harbor and city of Luanda, on the coast of Angola. Founded by the Portuguese in 1575, Luanda became the administrative center of Portuguese rule in Angola in 1627, one year after this map was made. The port of Luanda was also the center of the Angolan slave trade, controlled by the Portuguese Empire, and which is estimated to have supplied around one-quarter of all African slaves sent to the Americas.