Answer:
Under the terms of the treaty negotiated by Trist, Mexico ceded to the United States Upper California and New Mexico. This was known as the Mexican Cession and included present-day Arizona and New Mexico and parts of Utah, Nevada, and Colorado (see Article V of the treaty).
They rebelled against his policies
During the neolithic revolution, the need of getting a reliable source out of the resources around was of great importance. Since the resources are scarce, an organization of how to harness the resources was a challenge. This was how the power play of politics and division emerged during that era.
