character: Thomas Edison
topic: Inventions that Boosted Manufacturing
grade: 3
subject: History
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character: Henry Ford
topic: Automobile Assembly Line
grade: 3
subject: History
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character: George Washington Carver
topic: Crop Rotation and Agriculture
grade: 3
subject: History
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character: Alexander Graham Bell
topic: Invention of the Telephone
grade: 3
subject: History
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