character: Henry Bessemer
topic: Bessemer Process for Steel Production
grade: 2
subject: History
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character: James Watt
topic: Steam Engine and Its Impact
grade: 2
subject: History
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character: Eli Whitney
topic: Cotton Gin and Mass Production
grade: 2
subject: History
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character: George Stephenson
topic: Locomotives and Railroads
grade: 2
subject: History
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