What did Magellan do that affected the people in Europe?

Ferdinand Magellan is best known for being an explorer for Portugal, and later Spain, who discovered the Strait of Magellan while leading the first expedition to successfully circumnavigate the globe. While crossing the Magellan Strait, the explorer and his crew observed two galaxies visible to the naked eye from the southern hemisphere, now known as the Magellanic Clouds

Explanation:

Nevertheless, European geographic knowledge was expanded immeasurably by Magellan's expedition. He found not only a massive ocean, hitherto unknown to Europeans, but he also discovered that the earth was much larger than previously thought.

Explanation:

Ferdinand Magellan led the first expedition to circumnavigate the globe and became the first European to cross the Pacific Ocean.