Answer: The Walla Walla Council was held in 1885, in Waiilatpu, in the Walla Walla Valley in the state of Oregon.
That treaty defined the lives of tribes like Umatilla, Cayuse, and Walla Walla when the U.S. government invited the tribes to the council in order to protect the interest of their tribes.
The tribes attended to protect their sacred lands and did not want to surrender their culture neither their freedom.
Before the council was held, government employees destroyed Indian economies, divided the territories, and offered their sacred lands outsiders.
This was about the walla walla treaty as an example