The Aborigines found themselves in a situation were they were systematically assimilated into a new culture without being able to do anything. The children where taken away from their parents, and they were raised by people that were of British descent or were educated in British based institutions. That led to the children learning only what their British parents and institutions were teaching them, thus not being able to preserve anything from the Aboriginal culture.
Also, there were forced marriages between the British settlers and the Aboriginal women with the purpose of ethnically wiping out the Aborigines in few generations. That was one of the worst methods that has been used for destroying indigenous people.
The reason was because the north believed that the blacks should be free while the south thought the blacks should be slaves because they don't like what they don't understand
They pushed for a war against Britain to restore national honor. They insisted that invading British-held Canada would deprive the Native Americans of their main source of arms and drive the British out of Native Americans. They also believed that the British would make naval acknowledgement to get Canada back from the Americans.
Soviet Union was the first country