Indo-Canadians are Canadians whose family can trace back to India. The names "East Indian" and "South Asian" are used for people who originate from India, to tell them apart from the First Nations peoples of Canada who are often called Indian, and from the people of the Caribbean, who are sometimes called West Indian. Most Indo-Canadians call themselves "Indian", instead of "East Indian". This is because Christopher Columbus thought the Americas were India, and that Native Americans were Indian.