How has colonization affected present aboriginals?

The question is too broad to be able to answer here. This is asking for the history of a putative race of people after a certain date to be contained in a little answer box. It also looks like a school or college essay question. Also, if you're looking at Australia, then the term you want is "Aboriginies" rather than "Aboriginals" which is a global term encompassing indigenous natives from many continents. I suggest you go to Wikipedia and look up "Australian Aborigines"