By the start of the 15th century, ships were now much larger and able to support long distance travel with a minimum number of crew aboard. With that, the Portuguese started exploring the west coast of Africa and the Atlantic under orders from Prince Henry the Navigator. At this point, Europeans had not yet been capable of navigating completely around Africa since the ships being built were not yet fully capable of being able to sail very far from the coast and navigation in open waters was difficult, but the Portuguese continued pushing down the western African coast looking for ways to bypass the Ottomans and Muslims of Africa who had been making overland trade routes difficult. In 1451, Prince Henry the Navigator helped fund and develop a new type of ship, the caravel, that featured triangular lateen sails and would be able to travel in the open ocean and sail against the wind. In 1488, Bartholomew Diaz rounded the southern tip of Africa, named the Cape of Good Hope by King John of Portugal, and entered the Indian Ocean from the Atlantic.
One explorer, Christopher Columbus, sought funding from the Portuguese to search for a passage to Asia by sailing westwards, but he was rejected. At this time in the late 15th century, Portugal's domination of the western African sea routes prompted the neighboring Crown of Castile and the Catholic monarchs in modern Spain to search for an alternative route to south and east Asia (termed Indies), so they provided Columbus with the funding he required. Ultimately, Columbus discovered the Americas in 1492, and European settlements would soon follow. At the same time, when it became clear Columbus hadn't landed in Asia, it was understood by everyone that this was not necessarily the route the Europeans were searching for, the Portuguese continued to send explorers around the world in several directions in an attempt to reach the East Indies.
