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).
John Cabot
Information about the 1497 voyage comes mostly from four short letters and an entry in a 1565 chronicle of the city of Bristol. The chronicle entry for 1496/7 says in full:
"This year, on St. John the Baptist's Day [24 June 1497], the land of America was found by the Merchants of Bristow in a shippe of Bristowe, called the Mathew; the which said the ship departed from the port of Bristowe, the second day of May, and came home again the 6th of August next following." –
G.E. Weare, "Cabot's Discovery of North America," (London, 1897), p. 116