The statement that is not true is:
The government protected Chief Joseph and the Nez Perce by allowing them to live on their land and making settlers establish farms in a different region.
In reality, the United States government did not protect the Nez Perce in this manner. The government often forced the Nez Perce and other Native American tribes onto reservations, taking away their land and resources, and they faced significant challenges and conflicts with settlers. Chief Joseph and the Nez Perce were ultimately driven from their land, leading to their famous flight in 1877.