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The Sioux Tribes were located in the Northern Great Plains. This includes: North and South Dakota, northern Nebraska, eastern Wyoming, and southeastern Montana.
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With the Louisiana Purchase and the Westward migration, the buffalo, which were a huge part of the Sioux lives, decreased dramatically.
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Sitting Bull is elected the Sioux leader.
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The Great Sioux Reservation, gave the Sioux tribes most of South Dakota west of the Missouri River. It also said that the government pledged to keep whites out of this territory.
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During General Custer's expedition gold was discovered in the Black Hills. After gold was discovered many prospectors invaded the Indian territory.
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Warriors led by Crazy Horse turn back troops led by U.S. General George Crook.
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General Custer attacks an Indian settlement. Sitting Bull, Crazy Horse, and other Indian leaders defeat him at the Battle of Little Bighorn.
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U.S. Congress grants 160 acres of reservation land for private use to the heads of native households. The land that is not assigned to put up for sale to non-native settlers. This reduces the Sioux reservation by 50%
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U.S. congress passes an act to split the Sioux reservation into six smaller reservations.
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Sitting Bull is murdured on Standing Rock Reservation. Big Foot and his member's seek refuge with Red Cloud, but they are killed by the 7th cavalry at Wounded Knee.
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The Citizen Act of 1924 makes any Indian born within the U.S. a full citizen.
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After the failed Allotment policy the unsold land was given back to the Sioux.
