In the Western world, large-scale forcible
relocation of a specified "people' was introduced in the early nineteenth century United States, as the official
policy of the United State government. Informally, scores of Indian tribes had "emigrated" from their lands
as a result of European pressure, at times escaping from direct violence by European settlers, at times
looking for food, at times being pushed by other native groups reacting to direct pressure from European
settlers.