AP World History Modern Practice Questions - AP World History Modern Exam

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Which technological and agricultural development most directly enabled the population growth of Song Dynasty China (c. 960-1279)?

The introduction of maize from the Americas The invention of the heavy iron plow by the Mongols The adoption of fast-ripening Champa rice from Southeast Asia The collapse of the Grand Canal trade network

Correct Answer:

The adoption of fast-ripening Champa rice from Southeast Asia

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