potatoes was in the old world  so that was a exchange from the old word to the new world  the old word had to exchange  that with us .

they exchange a lot of foods with us today like grapes and other fruits and tea  if it wasing   from theme we would't have that stuff

Christopher Columbus is the that find the new world and the one that made the exchange and found it

apples are from the old word it was one of the exchange to . and now it is is the new world for exchange

cows are from the new world that was one of the exchange to it is from are world and other types of meat

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