Who was an Italian explorer to demonstrate that Brazil and the West Indies did not represent Asia's Eastern outskirts?

The Italian explorer who demonstrated that Brazil and the West Indies did not represent Asia's eastern outskirts was Amerigo Vespucci. He undertook several voyages to the New World in the late 15th and early 16th centuries and was among the first to suggest that the lands discovered by Columbus were part of a separate continent. His findings contributed to the recognition that the Americas were distinct from Asia, leading to the eventual naming of the continent "America" in his honor.