character: John D. Rockefeller
topic: Business Strategies and Innovations
grade: 2
subject: History
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character: Andrew Carnegie
topic: Business Strategies in the Steel Industry
grade: 2
subject: History
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character: Henry Ford
topic: Innovations in the Automobile Industry
grade: 2
subject: History
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character: Thomas Edison
topic: Innovations in Electricity and Inventions
grade: 2
subject: History
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