. . . "Bulgar Khaganate" . . "first" . "medieval Bulgarian state" . . . "Danubian Bulgaria" . . "Empire" . "Bulgarian emperor" . "First Bulgarian Empire (681\u20131018)" . . . . "First Bulgarian Empire" . "Bulgarian Empires" . "a powerful empire" . "Bulgarian Emperor" . . . . . . . "Bulgars" . . "Samuil's empire" . "the first Bulgarian state" . . . . . "Slavicized" . "Albania" . "Bulgar Khanate" . . "Bulgar Empire" . "medieval Bulgarian" . "First Bulgarian Tsardom" . . "Danube Bulgarian Khanate" . . . . . . "lower Danube" . "empire" . . . "(Danubian) Bulgaria" . "First Bulgarian Empire" . . . . "Bulgarian State" . "Bulgarian Empire" . . "Bulgarian Empire, First" . . . "1st Bulgarian Empire" . . . . . "First" . "10th century Bulgaria" . . "Bulgarian Kingdom" . . . . . "Bulgarian state" . . "Bulgaria" . "new empire" . "Byzantine Empire" . "Bulgarian ruler" . . . "Bulgar" . . . "Bulgarian empire" . . . . "First Bulgarian Kingdom" . . . . "Bulgarians" . . . "Bulgarian Khans" . "Medieval Bulgaria" . "Danube Bulgaria" . "Bulgarian" . . "Bulgarian Empire, 1st" . . . . "new Bulgarian state" . . . . . "(Bulgaria)" . "First Empire" . . "Tsar of Bulgaria" . . "Bulgar territorial expansion under khans Krum and Omurtag" . . "Bulgar state" . . . "Bulgar invasion" . . "Bulgarian lands" .