October 12, 1492 commemorates the arrival of Christopher Columbus in the New World.
"Christopher Columbus was not the first person to propose that a person could reach Asia by sailing west from Europe. In fact, scholars argue that the idea is almost as old as the idea that the Earth is round. (That is, it dates back to early Rome.)"
"Contrary to popular belief, most educated Europeans in Columbus' day understood that the world was round, but they did not yet know that the Pacific Ocean existed. As a result, Columbus and his contemporaries assumed that only the Atlantic lay between Europe and the riches of the East Indies."
http://www.history.com/topics/columbus-day
