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Acquisition of South Dakota territory through Louisiana Purchase
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President Thomas Jefferson purchased the Louisiana Territory from France and its leader Napoleon Bonaparte. -
Lewis and Clark pass through South Dakota
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Meriweather Lewis, and William Clarke pass through South Dakota. Their job was to explore the new territory acquired in the Louisiana Purchase. -
First permanent settlement in South Dakota
Supplemental Website
Joseph La Framboise established Fort Pierre as the first permanent settlement in what is now South Dakota. -
Gold is discovered in South Dakota
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Gold is first discovered in western South Dakota. This discovery leads to a massive gold rush with people coming from all over the country. -
South Dakota becomes a state
Supplemental Website
South Dakota is given statehood. It becomes the 40th state in the United States. -
Work begins on Mount Rushmore
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Gutzon Borglum begins working on the Mount Rushmore monument. The monument was completed after Borglum's death in 1941.