Following the death of Joseph Smith in 1844, Brigham Young, as president of the Quorum of the Twelve, became the effective leader of the Church of Jesus Christ of Latter-day Saints in Nauvoo, Illinois.For the first few years, Brigham Young and the thousands of early settlers of Salt Lake City struggled to survive.The expedition traveled as far north as Utah Lake and encountered the native residents.
In the 1830s, thousands of migrants traveling from the Eastern United States to the American West began to make stops in the region of the Great Salt Lake, then known as Lake Youta.
Utah was Mexican territory when the first pioneers arrived in 1847. territory upon the signing of the Treaty of Guadalupe Hidalgo, February 2, 1848.
Early in the Mexican–American War in late 1846, the United States had taken control of New Mexico and California. The treaty was ratified by the United States Senate on March 11.
The city of Provo, Utah was named for one, Étienne Provost, who visited the area in 1825.
The city of Ogden, Utah was named after Peter Skene Ogden, a Canadian explorer who traded furs in the Weber Valley.