Well before he mounted his expeditions on behalf of Spain, Columbus, an Italian from Genoa, had sailed to provision Europe’s first large, fortified overseas outpost in the tropics at Elmina, in modern-day Ghana. Europe’s expeditions to West Africa of the mid-fifteenth century were bound up in a search for the sources of that region’s prodigious wealth in gold. Indeed, it was the huge trade in this precious metal, discovered by the Portuguese in 1471, and secured by the building of the fort at Elmina in 1482, that helped fund da Gama’s later mission of discovery to Asia. This helped make it
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