character: Andrew Carnegie
topic: Philanthropy and the Steel Industry
grade: 4
subject: History
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character: John D. Rockefeller
topic: Oil Industry and Business Strategies
grade: 4
subject: History
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character: Cornelius Vanderbilt
topic: Railroads and Transportation Growth
grade: 4
subject: History
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character: J.P. Morgan
topic: Banking and Industrial Consolidation
grade: 4
subject: History
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