Go back far enough and you'll discover that, at some point in the past, all land was one taken through force without compensation by one conqueror or another.
The same way you think could potentially also justify the history of slavery in the United States as being a historical wrinkle.
And if that's what you want to do: great, but know I'm not on your side of history.
Acting like the Iroquois and Algonquins (or substitute any other aboriginal tribes with adjacent borders, for that matter) didn't spend hundreds of years slaughtering each other for territory before they were both deposed by the European invaders is a little naive. So who, precisely, is supposed to get the "stolen" land back?
EDIT: just to be clear, I'm not advocating that first nation's are not due compensation or allowances for the loss of their lands, nor that slavery must be swept under a rug. On the contrary, we must look for the root causes of social unrest/upheaval and meet them head on. But you're not providing any practical courses of action that should be undertaken.
Did the local people's do the same? (Hint: Yes, everyone in the past were a holes)
We can only hold to account those actions which occured After we learn the lesson and make a rule to prevent it.
The UN has established rules that prevent this shit from recurring, and anything that happened before that is "too long ago" to merit true remediation.
Really... The alternative is to turn the entire world into the equivalent of Israel... And that's just evil.