The term 'Explorer Amerigo' refers to the Italian explorer Amerigo Vespucci. He is best known for his voyages of exploration in the late 15th and early 16th centuries, during which he explored the coasts of South America and the Caribbean. He was the first European to recognize that the lands he explored were not part of Asia, but instead a new continent. His explorations helped to establish the basis for the modern understanding of the Americas.