I do not have your choices of "the following" Here are some reasons I learned: Christianity, empire was too big and became hard to manage, there were many nonromans attacking parts of empire- Goths, the emperors themselves were weak or insane intrigue was rampant.
It further showed the influence that the church had on the crown.
It showed that the papacy didn't mind going to war for what they wanted.
It rallied the country together for a common cause, looking up to the papacy.
The resignation of president Nixon caused some people to distrust the government
Your answer is a. he was a strong believer in three separate branches.
Neutral because it means balanced