Considering that the Qin Dynasty was the 1st imperial dynasty of China, it would definitely be that **A civil war broke out** (since there was a more large power vacuum to be filled.)
A hurricane is a large storm system that forms in the atmosphere over warm ocean water. A tsunami is large set of waves triggered by some sort of vertical movement of rocks under water (earthquake, large landslide, volcanic explosion).
I think it was because only the emperor was aloud into the city
Every major Civil War battle east of the Mississippi River took place within twenty miles of a rail line. Railroads provided fresh supplies of arms, men, equipment, horses, and medical supplies on a direct route to where armies were camped. … They were also the lifeline of the army nation
