Utah Hitstory Timeline By 16rjimenez Jul 22, 1847 The first two mormons into the utah valley Sep 9, 1850 Utah Becomes a territory Dec 6, 1865 The Abolishment of Slavery in Utah May 10, 1869 Transcontinental Railroad Jul 25, 1879 First telephone service established in Ogden, Utah. Aug 3, 1887 Edmunds-Tucker Act is passed by Congress. Jan 4, 1896 Utah becomes a state Oct 18, 1909 Discovery of Rainbow bridge Jun 21, 1910 Rainbow Bridge made a National Monument. Apr 7, 1928 Bryce Canyon National Park is established. Jan 27, 1943 Geneva steel plant begins operation in Utah County. May 26, 1965 Canyonlands National Park is opened. Aug 25, 1995 Salt Lake City is announced as the site for the 2002 Winter Olympics.
