A Timeline of Utah By kcook Jul 24, 1847 July 24, 1847 Brigham Young and pioneers entered the Salt Lake Valley Sep 9, 1850 Utah was a U.S. territory May 10, 1869 Transcontinentual railroad was completed, and golden spike was layed down Mar 23, 1882 congress made polygamy illegal Jan 4, 1896 Utah became a state May 1, 1900 Scofield mine disatster May 22, 1910 Salt Lake had and earthquake Oct 13, 1920 Laurine Day was born in Roosevelt, Utah and actress May 31, 1983 record snowfall casued flooding statestreet became a river Jan 4, 1996 utah celebrated their 100th birthday of being a state Feb 8, 2002 Utah's Olympics Mar 12, 2003 Elizabeth Smart was found alive in Salt Lake City May 25, 2011 man who kidnapped Elizabeth Smarth
