There’s some place in Africa where, if you are talking only about humans, there may be people that is not descendent of immigrants. AFAIK nobody even knows where it is.
Our species, <i>Homo sapiens</i>, has now spread to all parts of the world but it's generally believed that we originated in Africa by about 200,000 years ago. We interacted with local archaic human populations as we colonised the globe.
mudkip
marcos