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Nauvoo was the central location of the Church and home to most of its members from 1839 to 1846. In 1839 the Saints were forced to flee from Missouri, while Joseph Smith and other leaders were incarcerated for the winter in Liberty Jail. After so much persecution, the Saints having been driven from their homes time and time again, many doubted that they should regather in any central location. However, the citizens of Quincy, Illinois, had cared for the fleeing Saints with Christian generosity, and land was available to be purchased on the Mississippi River, in Commerce, Illinois. Commerce was essentially a failed community. Its inhabitants had hoped to engage in trade due to the city's orientation on the river, but the area turned out to be a mosquito-infested, malarial swamp. The Saints bought property on both sides of the river, in Illinois and Iowa, and Joseph named the new Illinois city "Nauvoo," meaning beautiful in Sephardic Hebrew.
Latter-day Saints flooded into the area, not only for refuge from the pogroms in Missouri, but as a new home for new converts. Thousands sailed the Atlantic from Europe to join the Saints in Nauvoo. Eventually, Nauvoo would rival 1840's Chicago in size. Land was purchased from settlers and speculators, who sold the land on contract. In December of 1840, Nauvoo became a legal entity under the Nauvoo Charter. Although the charter was similar to other Illinois contracts, especially the Springfield charter, the charter issued by the state legislature offered the Saints more legal protection than they had ever known. Two important aspects of the charter were the ability to maintain a militia—the Saints had learned from hard experience that they might have to defend themselves—and the demand for habeas corpus, the necessity to provide evidence before nabbing and arresting Mormon leaders. This writ protected Joseph Smith and others from being extradited to Missouri on fake charges. 
The building boom in Nauvoo was especially marked in 1841-1843. It became difficult for newcomers to find temporary lodging. Joseph Smith's family took in guests on a continuing basis.
After suffering devastating sickness caused by the swamp and mosquitoes, early settlers managed to reclaim the land and build a thriving city. The city was a community of gardens, and visitors commented on its orderliness and fruitful beauty. Gardens on the city lots produced vegetables, fruit, berries, and herbs. In outlying areas, farmers established cooperative farms, which produced wheat, corn, and potatoes. A brickyard was established, and soon brick homes dotted the landscape. Merchants and tradesmen found good business in the city. Civic groups built a cultural hall and a music hall, and the Saints constructed a grand hotel called the Nauvoo House. The Seventy built a hall and sponsored a library. Patriotic celebrations were held on Independence Day, with bands, parades, speeches, and other festivities. There were dances and choir performances on this and other occasions. Nauvoo also was home to performing troupes, poets, and composers. Other attractions included river boat excursions, circuses, and art exhibits. Classes were offered by part-time teachers and tutors. Nauvoo provided an active social and cultural life for its citizins.
The Nauvoo Temple
Joseph received a revelation to build the Nauvoo Temple. Construction was begun in the fall of 1840. The final cost reached $1,000,000 and taxed the resources of the Saints, many of whom were destitute at the time. This would be the second temple built by the church, with the Kirtland Temple being the first. "It was said that when seen from the opposite side of the river, the Nauvoo Temple presented one of the “most beautiful, chaste, and noble specimens of architecture to be found in the world.” Its tower and spire were visible from twenty miles away.
- No effort was spared. No sacrifice was too great. Through the next five years men chiseled stone and laid footings and foundation, walls and ornamentation. Hundreds went to the north, there to live for a time to cut lumber, vast quantities of it, and then bind it together to form rafts which were floated down the river to Nauvoo. Beautiful moldings were cut from that lumber. Pennies were gathered to buy nails. Unimaginable sacrifice was made to procure glass. They were building a temple to God, and it had to be the very best of which they were capable.
Joseph never lived to see the completion of the temple, due to his martyrdom in Carthage, Illinois. However, the saints were able to complete the temple in May 1846, and some of them were able to receive the Temple endowment ceremony.
- Ordinance work was begun before the temple was entirely completed. It went on feverishly until, in the cold of the winter of 1846, the people began to close the doors of their homes and wagons moved slowly down Parley Street to the water’s edge, then across the river and up the banks on the Iowa side.
- Movement continued. The river froze over, it was so bitter cold. But it made it possible for [the Saints] to move on the ice.
- Back to the east they looked for the last time to the city of their dreams and the temple of their God. Then they looked to the west to a destiny they did not know.
- The temple was subsequently dedicated, and those who dedicated it said “amen” and moved on. The building was later burned by an arsonist who almost lost his life in the evil process. A tornado finally toppled most of what was left. The house of the Lord, the great objective of their labors, was gone.
The building materials were then used in many other buildings in the surrounding area. The Smithsonian has one of the original sunstones from the temple. The other is in the Museum of Church History and Art.
Joseph and Hyrum Smith were martyred at Carthage Jail in 1844, throwing the Saints into mourning and introducing controversy over succession to the presidency. Things had calmed down under the leadership of Brigham Young and the Quorum of the Twelve Apostles, but in 1845, Nauvoo's charter was rescinded and mob violence began against the Saints. The Twelve announced at the October 1845 general conference that evacuation of the Saints would begin the following spring. Throughout the winter, the Mormons hastened to finish the temple, so they could receive the ordinances to be offered there. Before the end of winter, 6,000 Mormons had received their temple endowments. Endowed with power from on high, they felt ready to leave. At the same time, the Latter-day Saints prepared physically for the exodus to the west. They sold property and obtained wagons and other necessities for the journey.
Restoring Nauvoo and Rebuilding the TempleGordon B. Hinckley announced in April 1999 that the Nauvoo Temple would be rebuilt. It was completed in June 2002.
- How grateful I am, how profoundly grateful for what has happened. Today, facing west, on the high bluff overlooking the city of Nauvoo, thence across the Mississippi, and over the plains of Iowa, there stands Joseph’s temple, a magnificent house of God. Here in the Salt Lake Valley, facing east to that beautiful temple in Nauvoo, stands Brigham’s temple, the Salt Lake Temple. They look toward one another as bookends between which there are volumes that speak of the suffering, the sorrow, the sacrifice, even the deaths of thousands who made the long journey from the Mississippi River to the valley of the Great Salt Lake.
- "Nauvoo," Encyclopedia of Mormonism, p. 987.
- "Nauvoo," Encyclopedia of Mormonism, p. 987.
- M. Russell Ballard, “The Legacy of Hyrum,” Ensign, Sep 1994, 55–58.
- Gordon B. Hinckley, “‘O That I Were an Angel, and Could Have the Wish of Mine Heart’,” Ensign, Nov 2002, 4.