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the use of strains of rice that ripened quickly enough to allow for two harvests in a single year Mongolian soldiers protecting trade routes that allowed more food to be imported the invention of horse-drawn plows that allowed more land to be cultivated the immigration of refugees from Chinggis Khan’s conquests

the use of strains of rice that ripened quickly enough to allow for two harvests in a single year
Mongolian soldiers protecting trade routes that allowed more food to be imported
the invention of horse-drawn plows that allowed more land to be cultivated
the immigration of refugees from Chinggis Khan’s conquests
What caused the sizable population rise in Song China during the eleventh century?
From Lesson 233:14.5 Review Questions·World History 1

Learn the use of strains of rice that ripened quickly enough to allow for two harvests in a single year Mongolian soldiers protecting trade routes that allowed more food to be imported the invention of horse-drawn plows that allowed more land to be cultivated the immigration of refugees from Chinggis Khan’s conquests and more in World History 1

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