BULGARIA UNDER BYZANTINE RULE (11th - 12th C.)
After the final subjugation of Bulgarian territories by Byzantium, its military and administrative model was imposed in the country. The lands south of the Balkan Mountains were included in the Byzantine temas (regions). The western parts were separated as the cotepanat Bulgaria, with Skopje and then Serdika (today's Sofia) as capitals. The territory between the Danube and the Balkan Mountains was the tema Paristrion (lands below Danube). Its centre was the fortress Drastar (today's Silistra).
Byzantium deprived Bulgarian clergy of high clerical power and the autonomous Bulgarian Patriarchate was degraded to an Ochrid archbishopric. The Byzantine taxation system was introduced but in greatly exaggerated form.
The rebellions headed by Peter Delyan (in 1040) and Georgi Voiteh (in 1072) were cruelly suppressed. The acquisition of high positions and titles, estates and profitable marriages affiliated a considerable part of Bulgarian aristocracy to that of Byzantium, which left the struggle of the Bulgarian people in the hands of the Bogomils, the followers of St. Ivan Rilski and the new boyars emerging from among the wealthy parts of society.