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Montana Timeline

80,000,000- 60,000,000 B.C. Dinosaurs die off in Montana.
2,000,000- 20,000 B.C. Series of glacial ice sheets cover portions of Montana.
15,000- 13,000 B.C. Asiatic people migrate over land bridge to Montana.
8,000-6,500 B.C. Prehistoric people develop communal hunting techniques in  Montana.
6,500 B.C.- 1,500 A.D. Prehistoric people populate all areas of Montana.
1500 Europeans reach North America and begin to displace native people.
1680 Montana natives acquire the horse.
1720 Montana natives acquire the gun.
1805-1806 Lewis and Clark Expedition crosses and recrosses Montana.
1807 Manuel Lisa builds first fur fort in Montana on the Yellowstone River.
1828 Fort Union, an American Fur Company post, is built at the mouth of the Yellowstone River.
1841 Father Pierre Jean de Smet establishes St. Mary's Mission in the Bitterroot Valley.
1853 Johnny Grant starts the first beef herd in the Deer Lodge Valley.
1857 First sheep ranching begins in the Bitterroot Valley.
1860 First steamboat reaches Fort Benton.
1862 Placer miners rush to gold strike on Grasshopper Creek (Bannack).
1864 Vigilantes hang Henry Plummer and other "Innocents"; Congress creates Montana Territory; first newspaper, the Montana Post, published in Virginia City.
1870 Open-range cattle industry begins on Montana prairies.
1872 Congress creates Yellowstone National Park.
1876 Custer's command is annihilated at the Battle of the Little Big Horn.
1877 Significant copper mining begins in Butte; Chief Joseph and the Nez Perce retreat across Montana.
1880 Utah and Northern Railroad enters Montana.
1883 Northern Pacific Railroad is completed through Montana; Marcus Daly establishes the town of Anaconda and its smelter works.
1889 Montana joins the Union as the 41st state.
1890 First hydroelectric dam is built in Great Falls.
1893 Great Northern Railway is completed through Montana.
1894 Helena wins election to determine the permanent capital of Montana.
1896 Populism (and later, Progressivism) becomes a significant factor in Montana politics.
1902 Montana Capitol Building is completed.
1903 Amalgamated Copper Company paralyzes the state's economy with the shut-down to force legislative relief.
1909 Chicago, Milwaukee, St. Paul and Pacific Railroad ("Milwaukee Road") is completed through Montana.
1910 Congress establishes Glacier National Park; forest fires devastate western Montana.
1910-1918 Homesteading boom peaks on Montana's plains.
1911-1925 "County-busting" craze creates 25 new Montana counties.
1914 Montana women receive the franchise (right to vote).
1916 Jeanette Rankin elected the first woman in the U.S. Congress.
1917 Rankin votes against U.S. entry into World War I; Industrial Workers of the World (IWW) organizer Frank Little is lynched in Butte.
1919 First of severe agricultural depressions (extending into the early 1940s) begins in Montana; oil is discovered in the Cat Creek field.
1921 Wave of bank failures begins in Montana.
1922 KDYS (Great Falls), Montana's first licensed radio station, broadcasts.
1923 Jack Dempsey-Tommy Gibbons world heavyweight championship fight is staged in Shelby.
1926 Montana artist Charlie Russell dies in Great Falls.
1930 Significant tourist industry begins in Montana.
1933 Construction of Fort Peck Dam begins; scores of Civilian Conservation Corps (CCC) camps are established across Montana.
1935 Works Progress Administration (WPA) begins projects in Montana; series of severe earthquakes hits central Montana.
1936 Rural Electrification Act (REA) begins work in Montana.
1941 Congresswoman Jeanette Rankin votes against U.S. entry into World War II.
1943 Smith Mine disaster kills 70 coal miners.
1950 Great Falls replaces Butte as Montana's largest city.
1951 Petroleum boom begins in eastern Montana.
1952 Mike Mansfield is elected to the U.S. Senate for the first time.
1953 KOOK-TV (Billings), Montana's first licensed television station, broadcasts.
1955 Aluminum plant begins processing in Columbia Falls; Berkley Pit copper operation starts in Butte.
1956 Construction of the federal interstate highway system begins in Montana.
1959 Severe earthquakes hit upper Madison Valley.
1961 Malmstrom Air Force Base (Great Falls) becomes site of the nation's first ICBM missile command.
1964 Congress passes the federal Wilderness Act.
1967 Bell Creek petroleum field is discovered and developed; longest and costliest strike in Montana history runs in Butte.
1968 Yellowtail Dam is completed; work begins on Libby Dam.
1969 Largest-scale strip mining of coal begins at Colstrip.
1970 Consolidation creates the Burlington Northern Railroad.
1972 Montana's electorate approves new constitution.
1975 Underground mining ceases in Butte.
1976 Mike Mansfield retires from the U.S. Senate, becomes U.S. Ambassador to Japan.
1980 Anaconda Company announces the closing of its Montana operations; Billings replaces Great Falls as Montana's largest city; fallout from Mount St. Helens volcanic eruption blankets Montana.
1981 "Milwaukee Road" declares bankruptcy.
1982 Copper-mining operations cease at Butte's Berkeley Pit.
1986 Limited underground mining resumes in Butte; some high-tech gold mining reopens in Montana's mountains.
1987 Burlington Northern sells a major portion of its Montana trackage to Montana Rail Link; last gaps in the federal interstate highway system are completed.
1988 U.S. and Canada initiate a Free-Trade Agreement, directly affecting Montana's economy; Large forest fires sweep areas of a drought-stricken Montana and Yellowstone National Park.
1989 Montana celebrates its statehood centennial.
1990 Montana's timber-industry income declines, while gains occur in tourism and specialized mining.
1991 Riot at State Prison in Deer Lodge results in five deaths.
1992 As a result of the 1990 federal census, Montana loses one of its two representatives in Congress; two incumbents oppose each other for the remaining seat; Attorney General Marc Racicot (R) defeats legislator Dorothy Bradley (D) for governor's seat.
1993 Robert Redford's film, "A River Runs Through It," sparks increased tourism and immigration to Montana; a generally wet summer produces record agricultural harvests.
1994 4,500 wildfires rage across Montana, burning 286,000 acres.
1995 Wolves are returned to Yellowstone National Park, where they thrive.
1996 Montana Freeman and federal agents involved in a standoff in eastern Montana; "Unabomber" Ted Kaczynski captured near Lincoln.
1997 A prison-population overflow creates a housing crisis for inmates, some sent out-of-state.
1998 The Montana Power Company sells its electric generating facilities to Pacific Power and Light, Global, Inc.
1999 As highway deaths rise, Montana reinstitutes a daylight speed limit of 70 mph on 2-lane paved roads.
2000 Summer wildfires scorch nearly 1,000,000 acres and raze 320 homes, mostly in the Bitterroot Valley; 19,600,000 acres of state and federal land are closed due to fire hazard.
2001 The Montana Legislature deregulates the electric industry in the state; wildfires again dominate Montana's drought-beset summer.