20th century By RMMS7 1900 Scofield Mine Disaster 1908 Natural Bridges Utah's first national monument 1917 U.S. enters war The U.S. enters war in 1917 1918 Zion National park Utah's first National Park 1920 Nineteenth amendment Gives vote to U.S. women. 1922 First radio transmission in Utah is heard 1923 Posey War 1929 Great Depression The great depression begins 1932 Franklin Roosevelt is elected president 1934 Drought Great drought hits Utah