What was a purpose of spanish and portuguese voyages of exploration

The major purpose of Spanish and Portuguese voyages of exploration were establishing sea routes to the Indies to make profits from trade. The seafaring exploration led to the discovery by Europeans of the Americas which was not the initial purpose of the voyages.

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disease was the number one killer of native peoples. they had had little exposure to the diseases of europe. this led to some villages being almost completely wiped out and some tribes destroyed.