Which of the following reasons is at least in part responsible for the peopling of the Yangtzi region in the southern part of China during the Ming era?

Which of the following reasons is at least in part responsible for the peopling of the Yangtzi region in the southern part of China during the Ming era?




a. The enforced migration of remaining Mongols within the Chinese population to the region of the Yangtzi
b. The opening of the region to settlement from Siam and Vietnam
c. The abandonment of rice and millet cultivation in the region in favor of wheat introduced by Portuguese merchants
d. The introduction of crops from the Americas that could be cultivated on inferior soils and did not require irrigation
e. The overpopulation of the northern provinces of China led to the Ming ordering a mass migration






Answer: D


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