Raymond, like his predecessors, attacked the Byzantine province of Cilicia.
Byzantine province, in fact, included only small eastern part of historical Pannonia.
The isolated resistance was suppressed and Bulgaria became a Byzantine province.
It was part of the Byzantine province of Pannonia.
In this capacity, Theodore faced the first Muslim attacks on the Byzantine provinces.
By then, almost all of the Byzantine provinces and their governors had declared themselves for the regency.
In the 6th century, another Byzantine province existed in this area.
The city and the surrounding coast became a Byzantine province (the Theme of Dyrrhachium) in the early 9th century.
It remained a Byzantine province until the Arab conquest of Sicily, in the 9th century.
Khosrau was encouraged to cease simply raiding the Byzantine provinces, instead attempting to conquer them.