If you mean that seriously: homo sapiens came into existence in Africa, existed solely there for a long time (generating lots of genetic diversity) and then spread throughout the world in multiple waves. It's complicated by the fact that there was no single location and population that became homo sapiens- it was more like a network of locations and populations that evolved concurrently (there was genetic exchange between them as they evolved from their predecessor species).
replyDepending on how you define it, I could see "parts of Africa" as being "native" but that doesn't really help this discussion.
> that doesn't really help this discussion
replyIt's the clearest possible example of the fact that simply "eradicating non-native species" is anything _but_ simple, and will have unforeseen implications and consequences. I doubt that modeless intended to advocate for the culling of the majority of humanity, but that was technically what they did. Similarly, SilverElfin correctly points out the high probability of unforeseen consequences of "just" changing the species make-up of a large component of the food web.