From what I remember, China was ruled by a series of emperors
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The economic term to describe the rate at which products are manufactured is : Productivity
Productivity will affect the end price of the products. If the goods are easily produced , there will be most likely that the price will and more affordable
hope this helps
Settlement of Americans in the west reflects mostly MANIFEST DESTINY.
Manifest Destiny was a popular nineteenth century belief of American settlers wherein they were ordained by God to prosper and expand from the Pacific Ocean to the Atlantic Ocean acquiring as much land as possible.