How did the Han dynasty establish a strong and effective government?
Answer: The Han copied the highly centralized Qin administrative structure, dividing the country into a series of administrative areas ruled by centrally appointed officials and developing a salaried bureaucracy in which promotion was based primarily on merit.
Why did people rebel against the Sui rule?
Answer: There was a lot of discontent about the loss of life, the forced labor, and the heavy taxes. Heavy taxation and compulsory labor duties caused widespread revolts and a brief civil war. Emperor Yang was assassinated in 618 by his adviser, Yuwen Huaji.(He had nothing to do with the Yuwen royal family of the Northern Zhou, who his father had usurped.)
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