George B. McClellan replaced Winifield Scott.
This is a very complex question, but they both collapsed due to:
decentralization and government corruption
plagues/ epidemics
high taxes
and invasions
Some differences are that the Chinese empires saw a revival while Rome didn't.
The topic of the discussion. :P Can't discuss if you don't know what you are discussing.
People who live in the authoritarian system do not have an effective way to restrain the power of the rulers
The answer you’re looking for is c