10. What is the main idea of this passage?
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A
The Incas once inhabited the ancient city of Machu Picchu.
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B
Peru was the primary country of the Incas.
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C
The Incan Empire can be found in ancient cities and was plundered by the Spanish.
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D
Spanish conquerors destroyed the Incan empire in the 13th century.
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E
Machu Picchu was the capital of the Incan empire.