India and the wealth of Asian commerce were already known to European rulers, merchants, and financiers. The strategic problem was finding a route that avoided the taxes collected by the states between Europe and the Indian Ocean. Bankers and governments expected a plausible commercial return rather than funding an aimless voyage into an empty unknown. Portugal's project was therefore a calculated shortcut into a functioning network.
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Portugal sought a shortcut, not an unknown world
Portuguese voyages aimed to enter known Asian trade systems while avoiding the tolls charged by intervening states.