"Follow the Great Law of Peace to victory!"
"The Iroquois were a warrior people..."
Besides breaking up the wall of text with proper use of the enter key, I suggest you read it before releasing it.
Playing the role of a warrior people, and starting with the premise that peace is the best solution, is a bit contradictory.
But what if the natives had chosen peace? Would they have repelled the invasion?
Obviously the answer is "no", so from a historical standpoint: peace wasn't the answer.
What we have is humans doing what humans do: expanding into "new" lands, and the people there before them get to suffer as a result.
The only viable solution (historically) is to repel the invaders.
Failing to do so is to lose your land, and your civilization.