Where and when sweet potato was first domesticated and what people first domesticated it?

Sweet potato was first domesticated in Central or South America, with evidence suggesting its cultivation dates back over 5,000 years ago. The indigenous peoples of these regions, particularly in areas like the Andes and Mesoamerica, were the first to cultivate sweet potato. Its cultivation then spread to other parts of the world, including Polynesia and eventually to Asia and Africa.