The two Smiths, Joseph and Hyrum, with two friends, Willard Richards and John Taylor, were sitting in a large room in the Carthage jail when a number of men, their faces blackened in disguise, came running up the stairway. The door of the room had no lock or bolt, and, as the men inside feared some attack, Hyrum Smith and Richards leaped to the door and shutting it stood with their shoulders against it. The men outside could not force the door open, and began to shoot through it. The two men at the door were driven back, and on the second volley of shot Hyrum Smith was killed. As his brother fell the prophet seized a six shooting revolver that one of their visitors had left on the table, and going to the door opened it a few inches. He snapped each barrel at the men on the stair; three barrels missed fire, but each of the three that exploded wounded a man. As the prophet fired Taylor and Richards stood close beside him, each armed with a hickory cane. When Joseph Smith stopped shooting the enemy fired another volley into the room. Taylor tried to strike down some of the guns that were leveled through the broken door.
"That's right, Brother Taylor, parry them off as well as you can!" cried Joseph Smith. He ran to the window, intending to leap out, but as he jumped two bullets fired through the doorway struck him, and also another aimed from outside the building. As soon as the mob saw that the prophet was killed they scattered, alarmed at what had been done.
The people of Carthage and the neighboring country expected that the Legion of the Mormons would immediately march on them and destroy them. Families fled in wagons, on horseback, and on foot. Most of the people of the near-by town of Warsaw crossed the Mississippi in order to put the river between them and their enemies. In this state of excitement the governor did not know which party to trust, so he rode to the town of Quincy, forty miles away, and at a safe distance from the scene of trouble. But the Mormons made no attempt to avenge the death of their leader; they intended to let the law look after that.
Week by week, however, it grew harder for them to live on friendly terms with the other people of Western Illinois, and more and more troubles arose to sow distrust. The Gentiles, as those who were not Mormons were called, began to charge the Mormons with stealing their horses and cattle, and the state repealed the charter that had been granted to the city of Nauvoo.
During that summer of 1845, the troubles of Nauvoo's people increased. One night in September a meeting of Gentiles at the town of Green Plains was fired on, and many laid the attack to the Mormons. Whether this was true or not, their enemies gathered in force and scoured the country, burning the houses, barns, and crops of the Latter-Day Saints, and driving them from the country behind the walls of Nauvoo. From their city streets the saints rode out to pay their enemies in kind, and so the warfare went on until the governor appointed officers to try to settle the feud. The people, however, wanted the matter settled in only one way. They insisted that the Mormons must leave Illinois. In reply word came from Nauvoo that the Saints would go in the spring, provided that they were not molested, and that the Gentiles would help them to sell or rent their houses and farms, and give them oxen, horses, wagons, dry-goods, and cash in exchange for their property. The Gentile neighbors would not promise to buy the goods the Mormons had for sale, but promised not to interfere with their selling whatever they could. At last the trouble seemed settled. Brigham Young, the new leader of the Mormons, said that the whole church would start for some place beyond the Rocky Mountains in the spring, if they could sell enough goods to make the journey there. So the people of Nauvoo prepared to abandon the buildings of their new flourishing city on the Mississippi, and spent the winter trading their houses for flour, sugar, seeds, tents, wagons, horses, cattle, and whatever else might be needed for the long trip across the plains.
The Mormons now looked forward eagerly to their march to a new home, and many of them traveled through the near-by states, buying horses and mules, and more went to the large towns in the neighborhood to work as laborers and so add to the funds for their journey. The leaders announced that a company of young men would start west in March, and choose a good situation for their new city. There they would build houses, and plant crops which should be ready when the rest of the Mormons arrived. But they knew there was always a chance that the people of the country would attack them, and therefore they sent messengers to the governors of the territories they would cross, asking for protection on the march. On February 10th Brigham Young and a few other men crossed the Mississippi and selected a spot on Sugar Creek as the first camp for the people who were to follow. Young and the twelve elders of the Mormons traveled together, and wherever their camp was pitched that place was given the name of "Camp of Israel."
The emigrants had a test of hardship even when they first moved across the Mississippi. The temperature dropped to twenty degrees below zero, and the canvas-covered wagons and tents were a poor shelter from the snow-storms for women and children who had been used to the comforts of a large town. Many crossed the Mississippi on ice. When they were gathered on Sugar Creek Brigham Young spoke to them from a wagon. He told them of the perils of the journey, and then called for a show of hands by those who were willing to start upon it; every hand was raised. On March 1st the camp was broken up, and the long western march began. The Mormons were divided into companies of fifty or sixty wagons, and every night the cattle were carefully rounded up and guards set to protect them from attack. From time to time they built more elaborate camps, and men were left in charge to plant grain, build log cabins, dig wells, and fence the farms, in order that they might give food and shelter to other Mormons who would be making the journey later. The weather was all against their progress. Until May it was bitter cold, and there were heavy snow-storms, constant rains, sleet, and thick mud to be fought with, but like many other bands of American pioneers the Mormons pushed resolutely on, some days marching one mile, some days six, until May 16th, when they reached a charming spot on a branch of the Grand River, and built a camp that they called "Mount Pisgah." Here they plowed and planted several acres of land. While this camp was being pitched, Brigham Young and some of the other leaders went on to Council Bluffs and at a place north of Omaha, now the town of Florence, located the last permanent camp of the expedition.
The trail of the Mormons now stretched across all the western country. At each of the camps men, women, and children were living, resting and preparing supplies to cover the next stage of their journey. But in spite of the care with which the march was planned those who left Nauvoo last suffered the most. There was a great deal of sickness among them, and owing to illness they were often forced to stop for several days at some unprotected point on the prairies. Twelve thousand people in all shared that Mormon march.
The Gentiles in Illinois did not think that the Mormons were leaving Nauvoo as rapidly as they should. Every week from two to five hundred Mormon teams crossed the ferry into Iowa, but the neighbors thought that many meant to stay. Ill feeling against them grew, and a meeting at Carthage called on people to arm and drive out all Mormons who remained by mid-June. Six hundred men armed, ready to march against Nauvoo.
When the Mormons first announced that they meant to leave their prosperous city in Illinois men came hurrying from other parts of the country to pick up bargains in houses and farms that they thought they would find there. Many of these new citizens were as much alarmed at the threats of the neighbors as were the Mormons themselves; some of them armed, and asked the governor to send them aid. The men at Carthage grew very much excited, and started to march on Nauvoo. Word came, however, that the sheriff, with five hundred men, had entered the city, prepared to defend it, and the Gentile army retreated. A few weeks afterward the hostilities broke out again, and seven hundred men with cannon took the road to the city.