Byzantine Empire under the Macedonian dynasty

The Byzantine Empire under the Macedonian dynasty underwent a revival during the late 9th, 10th, and early 11th centuries. Under the Macedonian emperors, the empire gained control over the Adriatic Sea, Southern Italy, and all of the territory of the Tsar Samuil of Bulgaria.

Source: Wikipedia — Byzantine Empire under the Macedonian dynasty (CC BY-SA 4.0)