character: Archimedes
topic: Ancient Innovations in Irrigation Systems
grade: 8
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character: Pharaohs of Ancient Egypt
topic: Engineering the Nile: Irrigation Techniques
grade: 8
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character: Roman Engineers
topic: Aqueducts and Water Management
grade: 8
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character: Mesopotamian Farmers
topic: Early Irrigation Techniques in Sumer
grade: 8
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