The route of Spanish explorers, especially Ferdinand Magellan, was Route D.
Using Route D, the Spanish explorers traveled southwest around Africa to South America to the southern tip of South America.
The Spanish explorers continued west across the Pacific Ocean, through Southeast Asia, across the Indian Ocean to the southern tip of Africa, then around Africa's west coast, returning to their starting point, Spain.
Thus, the route of Spanish explorers, especially Ferdinand Magellan, was Route D.
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