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Zebulon Pike explores the Colorado region.
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Gold is found along the South Platte River.
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Colorado becomes a separate territory.
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Colorado becomes a state.
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Colorado grants women the right to vote.
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The General Assembly adopts the flag and it becomes the official state flag.
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Colorado's population reaches one million people.
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The U.S. Air Force Academy is built in Colorado Springs.
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Hayman Fire, near Colorado Springs, is the largest wildfire in the state's history.
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Denver hosts its second national party convention, The Democratic Party.
