History of Salt Lake City Salt Lake City, where it has stayed ever since. The city's name was officially changed to "Salt Lake City" at the same time. In 1857, when the Mormon practice of polygamy came to national awareness, President James Buchanan responded to public outcry by sending an army of 2500 soldiers, called the Utah Expedition, to investigate the LDS Church and install a non-LDS governor to replace Brigham Young. In response, Brigham Young imposed martial law, sending the Utah militia to harass the soldiers, a conflict called the Utah War. Young eventually surrendered to federal control when the new territorial governor, Alfred
Salt Lake City holiday is Pioneer Day, July 24, the anniversary of the Mormon pioneers' entry into the Salt Lake Valley. It is celebrated each year with a week's worth of activities, including a children parade, a horse parade, the featured Days of '47 Parade (one of the largest parades in the United States), a rodeo, and a large fireworks show at Liberty Park. Fireworks can be legally sold and set off around July 24. First Night on New Year's Eve, a celebration emphasizing family-friendly entertainment and activities held at Rice-Eccles Stadium at the University of Utah, culminates with a fireworks display at