Natives Americans are famously straightforward people in their dealings with others, but as hunters they are clever.
There is a famous true story about a Native small village that was being bothered by a bear that would come to steal food when the people had left. The people would sometimes leave as a group in several boats. To solve the problem they all left the village noisily in their boats leaving one person behind to deal with the bear.
The United States uses a lot of clever tricks to eliminate indigenous populations as survivable entities so they can be consumed, assimilated and eliminated.
Because of the 'accelerating' nature of conflicts with indigenous people, groups of colonizers often use cognitive tricks to facilitate cultural extermination.
1) One interesting example involves an old project from the 1950s.
aside from the intimidating psychological effect at the time, there is also a sort of time bomb effect built in for future use.
Notice at the end of the second paragraph
"...the AEC announced that Project Chariot would be "held in abeyance." It has never been formally canceled."
This is a clever trick to head off the possibility of Natives using this project to resist further conquest.
Melting pots always have individuals used as 'mafia store fronts', as described on other pages. In this case there are lots of 'pretend good' white people masquerading as Natives, and these white people can act against the interests of Natives while pretending to be their friends or defenders.
In this case the set up involves leaving the Chariot project 'uncancelled'.
This creates a future, or pending, scenario in which fake indigenous people can deflate future Native power by shifting the narrative back to U.S. 'new' benevolence.
When the colonizing side needs new weapons, it can bring up Project Chariot, but in the context of how the melting pot is now more accommodating. In other words the new narrative is "We will cancel the project because now Natives are our friends, and they can finish surrendering without worrying about nukes".