The Andean people had a number of technologies which would be very advantageous to the North Americans. The Llamas and Alpacas for a start, but also the potato, quinoa, and peanut. The latter did make as far north as the Aztecs. Finally terra preta was also known in some parts of Ecuador and Peru.
The trouble is the Andeans had practically no contact with North America. What would be the easiest, most plausible way for the aforesaid technology package to make their way north, and be as ubiquitous as possible?
The trouble is the Andeans had practically no contact with North America. What would be the easiest, most plausible way for the aforesaid technology package to make their way north, and be as ubiquitous as possible?