character: Inca Builders
topic: The Inca Empire's Terracing Techniques
grade: 3
subject: History
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character: Andean Farmers
topic: Irrigation Systems in the Andes
grade: 3
subject: History
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character: Inca Leaders
topic: How the Inca Empire Managed Resources
grade: 3
subject: History
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character: Mountain Communities
topic: The Importance of Terracing for Agriculture
grade: 3
subject: History
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