Respuesta :
When Europeans brought new diseases to the Americas as part of the Columbian exchange, the outcome was that American populations declined dramatically.
What was the Columbian exchange?
The Columbian exchange refers to the exchange of ideas, foods, and crops between the new world and the old world following the voyage.
American populations declined dramatically when Europeans brought new diseases to the Americas as part of the Columbian exchange.
Therefore, B is the correct option.
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