"The potato was first domesticated in the region of modern-day southern Peru and extreme northwestern Bolivia This event took place between the years 8000 BC and 5000 BC."
-Potato, Wikipedia
"As wild potatoes taste bitter and contain
small amounts of toxins, early cultures must have spent quite a bit of
an effort to select the right tubers for cultivation that are more tasty
and less toxic. In the course of the centuries potatoes developed to be
an important staple food and a main energy source for early Peruvian
cultures, the Incas and the Spanish conquerors."
- The origin of the Potato limaeasy
"In the Andes potatoes are one of four major root/tuber staple crops.
There are about 200 different wild types found from Venezuela to Chile,
with the highest concentration around Lake Titicaca."
-Plant Profile: Potato, Sacred Earth
-How the Potato Changed the World, Smithsonian Mag