Great Explorers European whose descriptions of the riches of China made traders want to go to Asia. Marco Polo Leader of First Europeans to visit the Americas Leif Eriksson Portuguese explorer who found a sea route to Asia by sailing around Africa Vasco da Gama Portuguese explorer who was the first European to sail around the southern tip of Africa. Bartholomeu Dias Italian explorer who figured out that Columbus had not reached Asia. Amerigo Vespucci European who proved it was possible to reach Asia by sailing west from Europe Ferdinand Magellan Leader of the Spanish conquistadors who conquered the Aztecs Hernando Cortes Spanish conquistador who ordered his soldiers to kill the Inca Emperor Francisco Pizzaro Spanish explorer who looked for the Fountain of Youth and named for present-day Florida. Juan Ponce de Leon Explorer who claimed for Spain all of what is today the southeastern United States. Hernando de Soto Explorer who founded Quebec and Montreal. Samuel de Champlain