Exploration
In the Pacific Ocean, Jorge de Menezes (c. 1498–?), discovered Papua New Guinea. García Jofre de Loaísa (1490–1526), discovered the Marshall Islands. Explorations of the Americas began with the initial discovery of America by Christopher Columbus (1451–1506), who led a Castilian (Spanish) expedition across the Atlantic, discovering America. After the discovery of America by Columbus, a number of important expeditions were sent out to explore the Western Hemisphere. This included Juan Ponce de León (1474–1521), who discovered and mapped the coast of Florida; Vasco Núñez de Balboa (c. 1475–1519), who was the first European to view the Pacific Ocean from American shores (after crossing the Isthmus of Panama) confirming that America was a separate continent from Asia; Aleixo Garcia (14?–1527), who explored the territories of present-day southern Brazil, Paraguay and Bolivia, crossing the Chaco and reaching the Andes (near Sucre).
Naming of the Americas
Vespucci was apparently unaware of the use of his name to refer to the new landmass, as Waldseemüller's maps did not reach Spain until a few years after his death. Ringmann may have been misled into crediting Vespucci by the widely published Soderini Letter, a sensationalized version of one of Vespucci's actual letters reporting on the mapping of the South American coast, which glamorized his discoveries and implied that he had recognized that South America was a continent separate from Asia; in fact, it is not known what Vespucci believed on this count, and he may have died believing, like Columbus, that he had reached the East Indies in Asia rather than a new continent. Spain officially refused to accept the name "America" for two centuries, saying that Columbus should get credit, and Waldseemüller's later maps, after Ringmann's death, did not include it; however, usage was established when Gerardus Mercator applied the name to the entire New World in his 1538 world map. Acceptance may have been aided by the "natural poetic counterpart" that the name "America" made with "Asia, Africa," and "Europa".