Hmmm, I think we are superior beings to those savages in Asia
Lets go fight those crazy Europeans because we are better
And so the Europeans took over Canada
To this day imperialism is still a thing
Though lots of people nowadays respect all people on this planet, including me. People had a different thought process back then that's probably why they treated the first nations people the way they did. It started out as ethnocentrism, which is similar to Imperialism, the difference is that, one is a perspective / viewpoint and the other one is actually going out and taking over something for your country. But during the time there was a thin line between the two.