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Explorer Rene Robert Cavelier is the first European to enter Ohio.
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Settlers kill 90 Native Americans.
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Ohio becomes the 17th state.
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Ohio University in Athens began.
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The last Native Americans leave the state.
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345,000 men fought in the Civil War. 35,000 were killed.
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Civil War General Ulysses S. Grant is the first person from Ohio to be elected president.
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The Scioto River floods.
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John Glenn is the oldest astronaut to go in to space.
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The Cincinnati Red Sox become the first professional baseball team in America.