There was a short story (by H. Beam Piper, IIRC) where Worls War 3 forced the Afrikaners out of South Africa and down to the Palmer Peninsula (no one else would take them). Centuries later, when they were rediscovered, they had gone native and lived as "ubereskimoes" in such a marginal state that Negro Africa left them that way as an example of what happens to bigots.