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During the Age of Discovery, European powers raced to map the globe and control its wealth.
Bartolomeu Dias first rounded the southern tip of Africa in 1488, proving a sea route to Asia existed,
before Vasco da Gama completed the full voyage to India a decade later.
Armed with the astrolabe and the technique of dead reckoning,
Portuguese sailors navigated far beyond sight of land aboard caravel ships optimized for open ocean.
Their success dismantled the Ottoman Empire's grip on overland routes,
handing Portugal a monopoly over the spice trade — pepper, cloves, and
nutmeg worth more than gold in European markets.
Goa became their nerve centre in Asia,
and celestial navigation the skill that made it all possible.
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