Didn’t know Amerigo Vespucci was a slaveowner; where did that come from?
See the link. It claims natives were taken to be sold as slaves during the Alonso de Hojeda expedition.
I have no idea if it is true - but in view of the “seriousness of the charge” the name of the two continents will have to changed.
https://www.thoughtco.com/amerigo-vespucci-explorer-and-navigator-2136430