character: John A. Roebling
topic: Suspension Bridge Engineering
grade: 8
subject: History
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character: Brooklyn Bridge
topic: Engineering Marvel
grade: 8
subject: History
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character: Civil Engineering
topic: Innovations in 19th Century
grade: 8
subject: History
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character: George Washington Bridge
topic: Engineering Influence of Roebling
grade: 8
subject: History
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