Explanation: Christopher Columbus, who was a genocidal, slaving shithead, never realized he found a new landmass. His famous expedition was based on faulty calculations - presuming that the Earth was ~2/3s the size it actually was, contrary to contemporary knowledge (which had accurately known the rough size of the Earth since the 3rd century BCE) - and when he landed, he thought he had landed on the outskirts of fucking India (hence the term 'Indians' for Native Americans).
Despite making several more trips, Columbus went to his deathbed believing that he had found a route to India and just needed to root around a little more to find a spot with all the spices and polities that Europe was vaguely familiar with - a notion that the contemporary Italian explorer Amerigo Vespucci, from whom we get the term 'America', pretty roundly refuted.