The American continent is named after what merchant and explorer?

America is named after Amerigo Vespucci, the Italian explorer who set forth the then revolutionary concept that the lands that Christopher Columbus sailed to in 1492 were part of a separate continent. A map created in 1507 by Martin Waldseemüller was the first to depict this new continent with the name "America," a Latinized version of "Amerigo."

Source: Library of Congress