In 1488, Portuguese explorer Bartolomeu Dias (c. 1450-1500) became the first European mariner to round the southern tip of Africa, opening the way for a sea route from Europe to Asia. Dias’ ships rounded the perilous Cape of Good Hope and then sailed around Africa’s southernmost point, Cabo das Agulhas, to enter the waters of the Indian Ocean. Portugal and other European nations already had long-established trade ties to Asia, but the arduous overland route had been closed in the 1450s due to the Ottoman Empire’s conquest of the remnants of the Byzantine Empire. A major maritime victory for Portugal, Dias’ breakthrough opened the door to increased trade with India and other Asian powers. It also prompted Genoan explorer Christopher Columbus (1451-1506), then living in Portugal, to seek a new royal patron for a mission to establish his own sea route to the Far East. An Ambitious Plan Almost nothing is known about the life of Bartolomeu de Novaes Dias before 1487, except that he was at the court of João II, king of Portugal (1455-1495), and was a superintendent of the royal warehouses. He likely had much more sailing experience than his one recorded stint aboard the warship São Cristóvão. Dias was probably in his mid- to late 30s in 1486 when João appointed him to head an expedition in search of a sea route to India. Did you know? According to Greek historian Herodotus of Halicarnassus (c. 484-c. 425 B.C.), Egyptian pharaoh Necho II (d. 595 B.C.) sent Phoenician sailors out from the Arabian Gulf to sail around the African continent. Their journey took three years. João was entranced by the legend of Prester John, a mysterious and probably apocryphal 12th-century leader of a nation of Christians somewhere in Africa. João sent out a pair of explorers, Afonso de Paiva (c. 1460-c. 1490) and Pêro da Covilhã (c. 1450-c. 1526), to search overland for the Christian kingdom in Ethiopia. João also wanted to find a way around the southernmost point of Africa’s coastline, so just a few months after dispatching the overland explorers, he sponsored Dias in an African expedition. In August 1487, Dias’ trio of ships departed from the port of Lisbon, Portugal. Dias followed the route of 15th-century Portuguese explorer Diogo Cão (c. 1450-c. 1486), who had followed the coast of Africa as far as present-day Cape Cross, Namibia. Dias’ cargo included the standard “padrões,” the limestone markers used to stake Portuguese claims on the continent. Padrões were planted at the shoreline and served as guideposts to previous Portuguese explorations of the coast. Dias’ expedition party included six Africans who had been brought to Portugal by earlier explorers. Dias dropped off the Africans at different ports along the coastline of Africa with supplies of gold and silver and messages of goodwill from the Portuguese to the indigenous people. The last two Africans were left at a place the Portuguese sailors called Angra do Salto, probably in modern Angola, and the expedition’s supply ship was left there under guard of nine men.