Portuguese Reach Saharan Africa

In 1441, Portuguese mariners sailed as far as Cape Blanco (Ras Nouadhibou) on the Atlantic coast of the Sahara, in what is now Mauritania. The voyage came during a long campaign of exploration sponsored by Prince Henry, often called "the Navigator," and it opened a new chapter in the relationship between Europe and Africa. Within a few decades, direct sea contact would partly bypass the trans-Saharan caravan routes that had long linked West Africa with the Mediterranean world.

The background lay in Portugal's circumstances in the early fifteenth century. After seizing the North African port of Ceuta in 1415, the Portuguese crown and nobility became interested in Atlantic expansion. Motives were mixed: the hope of reaching the sources of West African gold, which reached Europe through Muslim-controlled intermediaries; religious zeal and the idea of finding Christian allies; commercial opportunity; and the prestige of the sponsors. Advances in ship design, notably the maneuverable caravel, and in navigation made longer voyages possible. A major psychological barrier fell when Gil Eanes rounded Cape Bojador in the mid-1430s, a point that sailors had long hesitated to pass.

The 1441 expedition is generally associated with captains such as Antão Gonçalves and Nuno Tristão, who reached the Cape Blanco region. Gonçalves is usually said to have been seeking seal skins and oil, and during the voyage the Portuguese seized a small number of local people and brought them back to Portugal. Details of the sequence vary among the chronicles, which were written later, notably by Gomes Eanes de Zurara, and they reflect the outlook of the Portuguese court. Historians therefore treat the exact order and circumstances of events with caution.

The consequences were significant and often grim. The captives, and the ransom and trade dealings that followed, led to further raids and then to organized commerce in enslaved Africans. In 1444 a large group was brought to Lagos in southern Portugal, an episode often cited as the beginning of the European Atlantic slave trade. Portuguese ships soon reached the Senegal River and Cape Verde, and the trading post at Arguin, established around the middle of the century, tapped into gold and other goods.

The longer legacy is hard to overstate. The route pioneered in these years led to Portuguese forts and trading stations along the African coast, to the rounding of the Cape of Good Hope in 1488, and eventually to sea routes to India. It also laid foundations for the Atlantic slave system that would shape Africa, Europe, and the Americas for centuries.