His death marked the effective end of the Bulgarian Empire.

The area was annexed by Bulgarian Empire in the 9th.

In 1204, the region is briefly occupied by the Bulgarian Empire.

According to some studies, the area was part of the First Bulgarian Empire between 681 and c.1000.

With his own death in 1018 the First Bulgarian Empire came to an end.

In the early 13th century, a revived Bulgarian Empire gained control of the region.

It was reconquered by the Bulgarian Empire in the beginning of the 13th century.

On the turn of the 9th century, the Bulgarian Empire was on the rise.

From 7th to 11th century the city was under the rule of the First Bulgarian Empire.

In English language sources, the country is often known as the Bulgarian Empire.