Emperor Giulio
King
Vespucci didn't actually name America, nor was he responsible for the first widely available maps. He did, however, sail far enough south to show that South America was a new continent, not the East Indies that Colombus had sought.
Cartography at that time was largely a German monopoly. Two such German cartographers, Martin Waldseemüller and Matthias Ringmann, drew up the first map showing the New World as such, mistakenly believing Vespucci to be the first European to reach it. Later, Waldseemüller tried to amend his mistake, but the name had already stuck.
Man, if was Colombus, I'd be pissed.

People in the Western Hemiphere should be called Colombians instead of Americans. Or if you want to get technical about it, we should be named after who ever the Viking was that found North America. OR if you want to go even further, we should have kept the name the Native Americans used.