Answer: Vespucci understood that the Americas were unknown lands to Europeans, while Columbus believed that he had landed in Asia.
Step-by-step explanation:
Columbus was an Italian navigator under the command of the Crown of Castile, Spain, looking for a western trade path to Asia, in order to reach oriental goods. What he believed was Asia, was indeed the New World.
Amerigo Vespucci (1454–1512) was an Italian explorer as well.He proved that Brazil and the West Indies were not Asia's Eastland, as first assumed by Columbus, but an unexplored land mass.