late edit: DISCLAIMER: The pictured map is not actually a representation of the territories before colonisation. It's a hypothetical map of what countries there might have been had the continent not been colonised, thus all the names and borders are fictional and have never existed.
For good actual maps, check out native-land.ca.
Every single person alive lives on land that has been “stolen” at least a time or two in our history. Focusing only on the horror of Europeans colonization is just one more way in which white people put themselves at the center of the human story.
I assure you that people with skin of every color have fought wars of conquest. It is not some special trick that only white Europeans could do.