After their founder, Joseph Smith, was murdered in 1844, the Mormons moved westward from their settlement in Nauvoo, Illinois, under the leadership of Brigham Young. When Young surveyed the Salt Lake Valley on July 24, 1847, he proclaimed, “This is the right place.” Thousands of Mormon pioneers followed him over the next two decades, many of them pushing their belongings in handcarts. The original 40-acre plot where the Mormons settled is the modern Salt Lake City, and the day on which Young chose the site is celebrated not only in Utah but in surrounding states with significant Mormon populations, such as Idaho, Arizona, Nevada, Wyoming, and California. Discuss