Yuma War
The Yuma War was the name given to a series of United States military operations conducted in southern California and what is today southwestern Arizona from 1850 to 1853. The Yumans were the primary opponent of the United States Army, though engagements were fought between the Americans and other native groups in the region. Conflict generally took the form of guerrilla warfare, and, over the course of three years, the army engaged in pursuing unfriendly natives, protecting American settlers crossing the Colorado River and preventing conflict between the native tribes. A peace treaty in summer of 1853 was signed, ending hostilities between the Yuma and the United States, but it sparked a short war between the Yuma and the Cocopah. During the conflict, the historic Fort Yuma was constructed and became an important outpost on the frontier.
Utah War
In the end, the Utah War started a slow decline for Mormon isolation and power in Utah. The Latter-day Saints lost control of the executive branch and the federal district courts, but maintained political authority in the Territorial Legislature and the powerful probate courts. In 1869, the Transcontinental Railroad was completed, and soon large numbers of "Gentiles" arrived in Utah to stay. Despite this, complete federal dominance was slow in coming. Conflict between the Mormons and the federal government, particularly over the issue of polygamy, would continue for nearly 40 years before Utah was finally made a state in 1896, and was perhaps not fully resolved until the Smoot Hearings of 1904–1907.