Yep, lotsa myths surrounding Columbus and his discovery. When he got here he found stoneage savages, no wheel, no beast of burden, no metal, no written language. The Aztecs were practicing canibalism and human sacrifice on a grand scale. Columbus knew the world was round (actually, spereoid) and so did many others back before the birth of Christ. Eratosthenes actually calculated how far it was around Earth more than 200 years before the birth of Christ. Columbus' estimate was way off.