Answer: a war
Explanation:
it caused a big problem in the us
Resembles that of the union (federal governemnt).
Answer:
The growing world economy.
The answer is B, I had this question recently and answered it correctly. Hope this helps :)
Answer: the empire began to split due to wars over succession, as the grandchildren of Genghis Khan disputed whether the royal line should follow from his son and initial heir ogedei or from one of his other sons.
Explanation: