Answer:
The first explorer to sail around the world was Ferdinand Magellan, a Portuguese explorer who led an expedition on behalf of the Spanish crown from 1519 to 1522. Magellan's voyage was the first to circumnavigate the globe, although Magellan himself did not complete the journey as he was killed in a battle in the Philippines. One of his ships, the Victoria, completed the circumnavigation under the command of Juan Sebastian Elcano. The voyage proved that the Earth was round and opened up new trade routes and opportunities for exploration.