character: John D. Rockefeller
topic: Industrial Innovation
grade: 12
subject: Economics
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character: Andrew Carnegie
topic: Philanthropy and the Steel Industry
grade: 12
subject: Economics
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character: Cornelius Vanderbilt
topic: Railroad Expansion and Business Practices
grade: 12
subject: Economics
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character: Henry Ford
topic: Mass Production Techniques
grade: 12
subject: Economics
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