He proved America was not part of Asia

Scholars have proven that Columbus had explored a new portion of Asia prior to his 1501-1502 journey. During his voyage to Portugal, he established that Brazil and the West Indies were not an extension of Asia's extreme eastern peninsula, but rather a distinct and unknown geographical mass.

He wrote to his friend Lorenzo di Pier Francesco de Medici to discuss his discoveries and convey his reservations about this remote Asian peninsula.

He refers to this as the New World in historical texts, a moniker that would stay for years to come.

Martin Waldseemuller, a German cartographer, made a global map based on the information provided by Columbus and Vespucci in 1507. He called the new continent, which had not yet been divided into North and South America, after Vespucci on his map. He offered it Amerigo's Latinized, feminized form.