They certainly reflect history better than they do for the First Nations in Canada.
I also have no idea whatsoever what 1500 year old history has to do with anything. None of the cultures of that time exist today in any meaningful sense. Even the Italians or Greeks of today are not the Romans and Greeks of 300 CE, they are vastly different cultures and speak unintelligibly different languages.
We also have lost much to history. Take a look at the shuffling that happened during https://en.wikipedia.org/wiki/Migration_Period