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Lewis and Clark
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The progress that turns iron into steel
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the creation of commercial oil wells
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oil replacing coal
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First Battle of Bull Run
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Battle of Antietam
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Battle of Shiloh
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Battle of Gettysburg
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Siege of Vicksburg
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Battle of Chancellorsville
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Battle of Fredericksburg
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Battle of the Wilderness
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the creation of the system to send electricity over miles
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the standard oil company
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the creation of the lightbulb
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when the labor union started
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the first light weight plane
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the creation of the model T
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the creation of the Talking Telegraph
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the great depression
