Answer: Amerigo Vespucci
Explanation: Amerigo Vespucci (March 9, 1454 – February 22, 1512), was an Italian explorer born in Florence. After America was discovered by Columbus, it was believed to be India because Columbus was primarily about to find a way to India. When Amerigo Vespucci sailed within the Portuguese expedition, around 1501-1502, he discovered and showed that West Indies and Brazil were not an eastern part of Asia, as assumed after Columbus's discovery. He showed that it was a completely unexplored land called the New World, which was named after him in 1507, America.