In South America, agriculture began as early as 9000 BCE, starting with the cultivation of several species of plants that later became only minor crops. In the Andes of South America, the potato was domesticated between 8000 BC and 5000 BC, along with beans, tomatoes, peanuts, coca, llamas, alpacas, and guinea pigs. Cassava was domesticated in the Amazon Basin no later than 7000 BC.