The Eternal City has been, from time to time, a sewer. The slums spread up the slopes of the hills and the mobs not only ran amok in the streets, but they actually ran the streets. The government was so weak that the only way to keep it safe was to move it to a more defensible location, viz. Ravenna. It relocated there in 402, and remained there until Emperor Romulus Augustulus abdicated in 476. After that, it was the capital of the Kingdom of the Ostrogoths, once those fellows moved their kingdom into Italy. The Roman Empire (Eastern Roman Empire, Byzantine Empire) reconquered it in 540 and held onto it until the Lombard invasion in the 751.
Emperor Constans was not entirely antagonistic to the new Pope. He made a state visit to Rome, staying twelve days. He attended Mass a few times, and gave the Pope with a golden pallium, a gold-bound, jewel-encrusted codex of the Gospels, and several other valuable things. When he left Rome, he left with bronze sculptures and bronze plates taken from the rededicated Pantheon.
|The Arms of Ravenna|
|Constans II brained with a heavy stone soapdish|
Maurus, by the way, died of natural causes; the autocephaly of his bishopric outlived him and was passed to Archbishop Reparatus. Constans II, however, was murdered in his bath by a chamberlain who resented the high taxes his emperor demanded.