This map and related illustrations portray the city of Nauvoo, Illinois
in the 1840s. Built by the Church of Latter-Day Saints (or Mormons) after
their arrival in Illinois in 1832, Nauvoo quickly became the largest city
in the state. The bloc-voting sect quickly amassed considerable political
power in the state, and fielded their own armed force, the Nauvoo Legion.
The Mormons soon came into conflict with their Illinois neighbors, and
a mob murdered their leader Joseph Smith and his brother Hyrum in 1844.
A two-year period of armed hostilities ensued. In 1846 the Mormons abandoned
Nauvoo and began their trek to Deseret, the modern Salt Lake Valley of
Utah.