<Tr> <Td> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> </Td> </Tr> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> <P> The Viking voyages did not become common knowledge in the Old World, and Europeans remained unaware of the existence of the Americas as a whole, until the first decades following the year 1492 . Many expeditions were launched from European nations in search of a Northwest Passage to East Asia (or "the Indies" as the region was called) in order to establish a shorter trade route to China than the Silk Road, a trade route which had become desperately needed and yet exacerbated by the Fall of Constantinople . Also, the Castilian crown needed an alternative to the Portuguese controlled eastern maritime trade route around Africa to India and East Asia . </P> <P> On August 3, 1492, Christopher Columbus set sail from the Port of Palos de la Frontera in the Province of Huelva, from the newly los Reyes Católicos coordinated Kingdoms of Castile and Aragon, in present - day Spain, financed by Queen Isabella I of Castille . Columbus's Letter on the First Voyage of his discovery of the Bahamas, Cuba, and Hispaniola spread the news across Europe quickly . Columbus rediscovered and explored much of the Lesser Antilles in his second voyage then discovered both Trinidad and Tobago on his third voyage whilst skirting the northern South American coast . His fourth voyage was spent scanning the Central American coast . The Voyages of Christopher Columbus opened the New World . </P>

When did the first explorers come to america