Mormons were persecuted and kept moving west to avoid persecution. As their new settlements became cities, people would get nervous again and push them out. E

Mormons were persecuted and kept moving west to avoid persecution. As their new settlements became cities, people would get nervous again and push them out. Eventually, they simply packed up and moved west until they were outside of the Unites States (Utah was not a state at the time). Utah became a state only after Mormons agreed to stop practicing polygamy. For more info, look up Mormon Pioneers.