It was one of the northernmost outposts of Byzantine authority in the south.

Byzantine authority was severely weakened, and the growing power vacuum at the center of the empire encouraged fragmentation.

It is unclear whether the region was under actual rather than nominal Byzantine authority after that; the local cities appear to have been virtually independent.

Byzantine authority survived, but in a much weakened state.

Chios remained well outside any practical Byzantine authority, however.

When the Byzantine authorities learned of his conversion he was ordered to repent his new religion, but refused.

Byzantine authorities routinely conducted large-scale population transfers in an effort to impose religious uniformity and the Greek language.

The entire affair was an embarrassment to Byzantine authority in Italy, and undermined John's power.

After a few years of fighting, Entichius re-established Byzantine authority.

Basil entered the city on 11 June 1011 and reestablished Byzantine authority.