Not all tubers are easily mass produced. The Andes have a diverse speciation due to complex evolutionary relationships based on steeped clines caused by altitudinal changes. Cassava is another important tuber, that is just not as known in America and Europe but certainly important throughout much of Latin America. But beans, coffee, corn and chilies are also endemic to the region.

Edit: just realized this was askhistorians. I'm going to leave my comment up because that is an important aspect but I understand it does not fulfill sub rules so delete at will. There are intersecting parts with Francisco Pizzaro and trade as well.