Why was the history of the Australian native peoples left out of the history books?

European settlers and native peoples interacted on the issue of land after the emergence of North America. They were displaced by the Europeans. Early settlers were convicts deported from England. Hence, they were unknown to the area. They had not even their own tradition and history. Nothing has been written in American and Australian history textbooks about the native peoples. That is why the Australian native peoples were left out of history. It could be made possible from the decade of 1960’s that native peoples started keeping their records.