Answer:
B
Explanation:
The Mongols brought a lot of change to China. They undid the long-standing dynastic system of Chinese government and changed the system of government, getting rid of civil service exams that had put government bureaucrats in power.
Answer: B. The Zimmerman Telegram.
Answer:
The empire had become too unwieldy to rule by a single emperor. ... The split of the empire allowed the eastern half of the empire to endure for 1000 more years, in part because this region was already more prosperous and better held together. The borders on the Western Empire were far more porous than those on the East.
Explanation:
Answer: Checks and Balances or Federalism one or the other
i think it is Federalism