character: Gustave Eiffel
topic: Eiffel Tower and Structural Innovations
grade: 8
subject: History
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character: Iron Bridges
topic: Development of Iron in Infrastructure
grade: 8
subject: History
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character: Structural Engineering
topic: Evolution of Engineering Techniques
grade: 8
subject: History
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character: Gustave Eiffel
topic: Contributions to Modern Engineering
grade: 8
subject: History
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