character: Qhapaq Ñan
topic: Inca Road System Engineering
grade: 3
subject: History
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character: Inca Builders
topic: Construction Techniques in Machu Picchu
grade: 3
subject: History
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character: Inca Engineers
topic: Water Management and Irrigation Systems
grade: 3
subject: History
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character: Andean Architects
topic: Stone Masonry in Inca Structures
grade: 3
subject: History
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