how did the white people claim australia from the abo's?

Answer 1

went out and killed any who disagreed.

Answer 2

Captain Cook sailed to and 'discovered' Australia (actually, it was there all the time, but Europeans didn't know it) He came from a more advanced civilisation - advanced in that it had soldiers with guns and the aboriginals were still living in the stone age. The outcome was therefore inevitable. Land hungry Europeans (Brits) grabbed what they wanted. A little like the American settlers v the native Americans.