To end the race all would have to be killed - Genetic base would still be there.
As to culture - Were all children placed in Residential Schools?
What reasoning did the Govt's use to keep this going?
What were the initial reasons to start this abhorrent program?
What results were they (Govt) looking for?
Canada's goal was very similar to that of Australia.... to breed out rather than have to kill off the aboriginal population. As for why, do you seriously have to ask that given the costs of maintaining the treaties? I could do the research for you, but, well, it's just as easy for you to google the numbers and the techniques and policies used. What I will tell you instead, is the personal side of it, based on MY family.
I belong to two francoCanadian families. My mother's family and my husband's family are both very large, very Catholic. Both sides have First Nations relatives in them in different ways, and both have seen different impacts. On my mother's side, her sister married a native. My uncle is one of the most incredible men I've ever met, and despite my aunty's passing from cancer, is a huge part of our family. His family is 'illegitimate'. When his mother was sent away to a residential school, her records were destroyed, and her treaty status thus revoked. Without a legal marriage to a treaty man, she never was able to reclaim any rights, or claim any rights for her children.
On the other side, my husband's side of the family, 3 of his aunts and uncles are testament to the effectiveness of the efforts the government undertook. After sending kids off to residential school, beating them, abusing them, and having them 'raised' without love or care (btw, this is my white mother-in-law's recount of residential school as well, as not only native kids were sent in poor communities), they grew up to be incapable parents to the children they had. The foster system then placed those kids with families, and a whole generation of children 'grew up white'. My husband's family is one of the few exceptions who kept their fostered and adopted kids in contact with their birth parents, and helped in the healing process, helped keep them in touch with their roots, with their culture. They still 'grew up white' though, married their high school sweethearts, and assimilated.
I'm lucky to have these people in my family. And they don't bear grudges, don't whip out the victim card at every turn. But I can't ignore the fact that the way they came to be here, to be part of our family, was at the time a very concerted effort on the part of the government, to make sure that the number of people who have treaty rights declined rather than rose. That concerted effort WAS genocide by the UN's definition.