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Custer is defeated by the Lakota Indians.
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Rutherford Hayes is elected the 19th President of the United States.
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The 20th president is assassinated and replaced by Chester Arthur.
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The territory of Dakota is divided and becomes two separate states.
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The territory of Idaho is admitted to the Union as the 43rd state.
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William McKinley becomes the 25th president of the United States.
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America and Spain enter into war over tensions in Cuba.
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The territory of Hawaii is formed. It is not yet a state.