character: Incan Farmer
topic: Terrace Farming Techniques
grade: 4
subject: Social Studies
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character: Incan Society
topic: Agricultural Practices
grade: 4
subject: Social Studies
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character: Andean Civilization
topic: Farming Innovations
grade: 4
subject: Social Studies
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character: Machu Picchu
topic: Incan Agriculture and Terraces
grade: 4
subject: Social Studies
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