This document provides a brief history of early voyages to Asia by Portugal and Spain in the 15th and 16th centuries. It summarizes that Prince Henry of Portugal developed navigation instruments and led expeditions down the west coast of Africa. Bartholomew Diaz discovered the Cape of Good Hope and reached India for Portugal. Christopher Columbus discovered North America for Spain in 1492, believing it was Asia. Amerigo Vespucci explored the new world and it was named after him. The discoveries led to rivalry between Spain and Portugal and an assignment to study the expeditions of Magellan, Villalobos, and Legaspi.