Who was the first person to sail around the world?

Indeed, sir, the first person to sail around the world was Ferdinand Magellan, though he did not complete the entire journey himself. Magellan set out from Spain in 1519 with a fleet of five ships and 270 men. After crossing the Atlantic Ocean and navigating through what is now known as the Strait of Magellan, his expedition became the first to cross the Pacific Ocean. Unfortunately, Magellan was killed in the Philippines in 1521 during a conflict with local tribes. The voyage continued under the leadership of Juan Sebastián Elcano, one of Magellan's officers. He and the remaining crew completed the journey, returning to Spain in 1522, thus making it the first known circumnavigation of the globe.