Which is my point, Metis. If we do evolve in our own way, then the Australian Aborigine, over the tens of millennia, would evolve differently,
They do. As does everyone else.
or more progressively or less progressively than others
This may well be the root of your confusion. Biological evolution (far as I know) does not have support for that kind of value judgement. When comparing native people from several places with each other and with modern westerners, there is no way of saying whether any is "more progressed" than any other.
You could establish a timeline, I suppose. But that establishes nothing beyond chronological advancement. It does not really make sense to even say that Homo Sapiens is more advanced than Neanderthals or Cro-Magnons; we just descend from them and have adapted a bit further for our specific environments.
and thus, would not be as intelligent or more intelligent than another group in a different environment which is the basis of racism.
There may well be people presenting such an idea, but I don't think that has any support from the Theory of Evolution as known in biology.
Intelligence is just one of many attributes involved in primate evolution. As such, it is not even necessarily advantageous in each and every situation. It takes considerable resources to develop and maintain primate intelligence, and at some turns it may have turned out to have been a less advantageous adaptation than the other alternatives present at the time.
Also, I don't think that there is even enough time for intelligence to develop noticeably differently in the timeframe of human history.