>>53312602It already has history.
You already have countless nations of aboriginals across the country, along with the first 200 years of country being set up by the British colonists.
You can easily turn that into having Australia region having connections with Galar region, due to "colonialism " in the form of exploration. And putting some elements from other regions as well, which can come in the form of Pacific Islanders, Chinese and Indian. The Chinese would be more noteworthy considering the fact that there were lots of Chinese immigrants that came over to the Gold rushes of Australia.
Even then, the actual Pokemon games didn't really use all of the history of the real-life regions.
