connecting the Andean's and Polynesians

Lets say somewhere in the 11 century some Polynesians arrive in Peru and form a lasting commercial connections with the Andean's. And spread crops like Taro Bananas Coconuts Jack and Bread fruits plus Chickens to the Andean's. How will Cultural diffusion and the spread of news foods between the two groups affect each other's development?
 
I think that when the Spanish arrive and conquer the Andes, they'll also learn a little more about the Pacific Islands and so they might decide to continue exploring westward across the Pacific Ocean...
 
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