character: John A. Roebling
topic: Innovations in Bridge Engineering
grade: 8
subject: History
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character: Brooklyn Bridge
topic: Engineering Marvel of the 19th Century
grade: 8
subject: History
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character: Cable-Stayed Bridges
topic: Modern Bridge Design Techniques
grade: 8
subject: History
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character: John A. Roebling
topic: Contributions to Suspension Bridge Design
grade: 8
subject: History
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