The new world's discovery and its colonization by the Europeans colonizers meant the end of the rich native's culture.
Before the natives were discover, they had good structuring societies and they only get worried about their own well being, but with the arrival of the Europeans, arrived the destruction of native's culture too, this because they forced natives to work for them and fight their wars.
For natives land was something sacred, they believed that they belong to land and that it provides them the essential things to survive, for colonizers the land was synonym of power, because of that each land they walk on turn in their property.
In the movie " THE LAST OF THE MOHICANS-, can appreciate how natives became to be part of the colonizers' army. By one side there were the Hurons, they count with French support, in the other hand there were the Mohawks, they defended British. Natives fought for interests that they didn't know; besides the colonizers' power ambition was transmitted to natives, who saw how their families and their pueblos disappear, because of the thirst of power.
Furthermore natives couldn't refuse to fight because they were under the Europeans laws and those who refused to fight were decapitated. Moving into the movie, when Nathaniel and his brother told the British officer that the hurons were attacking villages and that they have to abandon the fort to go to their village to protect their families, the officer accused and detained them, because he thought that the natives didn't want to defend the British sovereignty. For colonizers the only important thing was to conquer more lands to be more powerful, the natives feelings and priorities were trampled.