Title: Imperiul Bizantin la Dunărea de Jos în secolele X-XII
Subjects: History
Places: Dobruja (Romania and Bulgaria), Danube River Valley, Danube River Delta (Romania and Ukraine), Bulgaria, Byzantine Empire, Romania
Time periods: To 1393, Basil II Bulgaroctonus, 976-1025, 1025-1081, Comneni dynasty, 1081-1185, To 1711