1803: The US buys
the Louisiana territories, which includes Wyoming.
1805: Lewis and Clark explore much of Montana along
the Missouri, Marias, and Yellowstone Rivers.
1840-1860's: Settlers on the Oregon and Mormon Trails cross
military forces establish Fort Laramie as a major
staging ground and supply post along the Oregon
and Mormon Trails. Major military campaigns against
the region's Indians are staged here.
1867-1868: The Union Pacific Railroad reaches the
settlement of Cheyenne, which is made capital of
the Wyoming Territory. The railroad further enabled
the establishment of Laramie and Rock Springs.
1868: After many skirmishes between White settlers
and Indians, the second Treaty of Fort Laramie is
signed closing settlement of Powder River Country.
This treaty would be repeatedly violated and resulted
in the Black Hills War in 1876 which resulted in
the U.S. Government's acquisition of the Black Hills.
1868: Wyoming Territory is established.
1869: Cheyenne, Wyoming becomes the first location
in America in which women are given the right to
1872: Wyoming's Yellowstone Park becomes the nation's
first national park.
1890: Wyoming is admitted as the 44th state.
1891: Wyoming's Shoshone Forest becomes the nation's
first National Forest.
1892: An armed war breaks out between small farmers and
wealthy ranchers over land and water rights in
what came to be known as the Johnson County War.
Dozens of people were killed (some by hired mercenaries)
and the events of the war, in part, gave rise to
the idea of the "Wild West."
1906: Wyoming's Devils Tower becomes the nation's
first national monument.
1921: Teapot Dome oil scandal rocks the presidency
of Warren G. Harding