Personally, I think Fu Manchu did it.

Chinese cartography | China beat Columbus to it, perhaps | Economist.com:

"...Columbus found the New World in 1492; Dias discovered the Cape of Good Hope in 1488; and Magellan set off to circumnavigate the world in 1519. However, there is one difficulty with this confident assertion of European mastery: it may not be true.

It seems more likely that the world and all its continents were discovered by a Chinese admiral named Zheng He, whose fleets roamed the oceans between 1405 and 1435. His exploits, which are well documented in Chinese historical records, were written about in a book which appeared in China around 1418 called “The Marvellous Visions of the Star Raft”."