Answer:
Perhaps the biggest question in world history is why the balance of power shifted so dramatically in favor of Europe and the West instead of the East in the 1800s. One major reason is that China was so internally divided that development of any one province economically or technologically was a threat to the surrounding emperors. (C.)
Sumer had a surplus of "food", due to the fact that they were an agrarian outcome of the Neolithic Revolution. This meant that people could focus on other activities besides farming. <span />
The first answer is correct