Portuguese Empire years for the Portuguese to follow up on Dias's voyage to the Cape of Good Hope, though it has also been speculated that other voyages were in fact taking place in secret during this time. Whether or not this was the case, the long-standing Portuguese goal of finding a sea route to Asia was finally achieved in a ground-breaking voyage commanded by Vasco da Gama. The squadron of Vasco da Gama left Portugal in 1497, rounded the Cape and continued along the coast of East Africa, where a local pilot was brought on board who guided them across the Indian
First Dutch Expedition to Nusantara their spice in Lisbon, Portugal, as they could still make a decent profit by reselling it throughout Europe. However, in the 1590s Spain, which was at war with the Netherlands, was in a dynastic union with Portugal, thus making continued trade practically impossible. This was intolerable, and the Dutch would have been glad to circumvent the Portuguese monopoly and go straight to Indonesia, but the sailing directions needed in order to reach Indonesia were jealously guarded by the Portuguese. However, in 1592 the cartographer Petrus Plancius published a series of charts showing, in exact detail, the route to the Indies.