What was Ferdinand Magellan's notable achievement?

Ferdinand Magellan's notable achievement was his crossing of the Pacific Ocean, which was a significant milestone in maritime exploration. Magellan led the first expedition to successfully circumnavigate the globe, although he did not complete the entire journey himself. His expedition began in 1519 and, in 1520, he became the first European to navigate through what he named the Strait of Magellan, leading to the Pacific Ocean. This endeavor not only demonstrated the vastness of the Pacific but also provided crucial information about global trade routes and the interconnectivity of the oceans. The crossing was perilous and marked by challenges, but it ultimately expanded European understanding of the world and paved the way for further exploration and trade.