Indians were named after Columbus mistook America for India in 1492. Indians originally meant "Indians" or "Americans" for short. After the invasion of Portugal and Spain, they were also called Latin Americans.
There have been four views on the origin of Indians in academic circles: northward, that is, from Asia to America through the Bering Strait, and gradually southward; South, that is, from Malaya, Australia, Melanesia and Polynesia to Peru via Este Island, or to Hawaii or the southern tip of South America via Tierra del Fuego; In the west, that is, from Spain or Britain through Iceland and Greenland into Canada; Indigenous people say that Indians have cultivated corn from a kind of grass similar to corn in their long-term production and life practice. Corn is the staple food of Indians, and Peru is also rich in corn, potatoes and cotton. After Columbus discovered the New World, these crops gradually spread all over the world.