Ferdinand Magellan's voyage was significantly different from that of Christopher Columbus in terms of both route and objectives.
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Route: Columbus sailed west across the Atlantic Ocean in an attempt to find a new route to Asia, specifically aiming for India and the Spice Islands. In contrast, Magellan's expedition, which was the first to circumnavigate the globe (1519-1522), initially sailed south along the coast of South America after crossing the Atlantic, exploring the straits that now bear his name (the Strait of Magellan) to enter the Pacific Ocean.
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Geographical Objectives: While Columbus focused on reaching the Caribbean and making landfall in the Americas, Magellan sought a direct path to the Spice Islands (the Moluccas) by finding a westward route via the Pacific Ocean.
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Legacy: Columbus is often credited with the "discovery" of the New World, whereas Magellan's voyage provided the first comprehensive mapping of the route around the Americas and established the concept of global circumnavigation.
To address your specific options: Magellan did not sail west across the Atlantic to reach the Caribbean; rather, he sailed south down the coast of South America and then crossed into the Pacific Ocean. None of the options you provided fully encapsulate his actual route correctly. The most accurate statement is that Magellan sailed south down the coast of South America, seeking a route to the Pacific.