Centralist Republic of Mexico
Members of The Church of Jesus Christ of Latter-day Saints (LDS Church), often called Mormon pioneers, began settling in what is now Utah (then part of Alta California in the Centralist Republic of Mexico) in the summer of 1847. Mormon pioneers began leaving the United States for Utah after a series of severe conflicts with neighboring communities in Missouri and Illinois resulted, in 1844, in the death of Joseph Smith, Jr., founder of the Latter-day Saint movement.