utah history timeline By holdenFKNrussell Jan 1, 1845 John C. Fremont and Kit Carson name Antelope Island Sep 22, 1846 Donner Party enters the Salt Lake Valley Aug 24, 1847 Brigham Young enters the Salt Lake Valley Feb 2, 1848 Treaty of Guadalupe Hidalgo is signed, ending the Mexican-American War and transfering ownership of Utah to the USA Sep 29, 1852 Orson Pratt publicly announces the practice of polygamy Jan 1, 1863 Colonel Connor's men attack the Shoshone in what has become known as the Bear River Massacre May 10, 1869 continental railroad met at promentory summit Oct 2, 1875 Brigham Young Academy was established Mar 22, 1882 edmunds tucker act was passed which made polyamy illegal Jan 4, 1896 Grover Cleavland signs the bill that making Utah the 45th state May 1, 1900 Scott Field mine explosion kills more than 200 miners Oct 19, 1916 Utah State Capitol Dedicated Sep 15, 1928 Esablished in 1928 Wa Bryce Cayon National Park Dec 1, 1939 Hill Field is officially named by the War Department Jan 1, 1946 First Ski lift opens at Snow Park Resort in Park City Feb 14, 1982 Last mine closes in Park City Jan 1, 2002 Olympics 2002
