1. On December 4, 1861, the first telegraph line officially opened in Utah, connecting Salt Lake City with the rest of the country. This allowed for faster communication and helped Utah's economy grow.

2. The famous "Utah War" between the United States federal government and the Mormon settlers in Utah officially ended on December 4, 1858, when a peace treaty was signed between the two sides.

3. On December 4, 1985, a major earthquake struck the Wasatch Front region of Utah, causing significant damage to homes and businesses. The earthquake had a magnitude of 5.9 and was felt throughout the state.

4. Utah's first public library, the Salt Lake City Library, opened its doors on December 4, 1905. The library was founded through a donation from Andrew Carnegie and quickly became an important center for education and culture in the state.

5. December 4 is also the birthday of former Utah Governor and U.S. Secretary of Health and Human Services Michael O. Leavitt, who was born in Cedar City, Utah in 1951. Leavitt was an influential figure in Utah politics for many years and played a key role in healthcare policy at the national level.