"40 years" . . "its conquest in the Byzantine Empire" . "long and hard war" . . "War against Bulgaria" . . "First Bulgarian Empire" . . . "Kievan Rus'(968\u2013969)" . . "Bulgarians" . "Byzantine conquest of Bulgaria" . "final subjugation" . . . "Bulgarian\u2013Byzantine war" . "Bulgaria, Byzantine conquest of" . "Second Bulgarian Empire" . . . "conquered" . "Fifth Bulgarian-Byzantine War" . "was conquered by the Byzantines" . "reconquest of Bulgaria" . "Principality of Duklja" . "conquer Bulgaria" . "Bulgaria was conquered" . "succumbing" . . . "Byzantine\u2013Bulgarian conflict" . . "Bulgarian Empire" . ":Byzantine conquest of Bulgaria" . "*Dissolution of theFirst Bulgarian Empire" . "had conquered the First Bulgarian Empire" . . "wars against Bulgaria" . "series of wars" . "Bulgarian campaigns" . . . "complete subjugation" . . . . "Byzantine victory" . . . "Byzantine conquest of Bulgaria" . . . . . . . . "Rus'" . "Basil's \\\"reconquest\\\"" . . "Pechenegs" . "The Empire regained" . . "subjugation" . . "Kingdom of Hungary" . "conquest" . "campaigns" . . . "annexation" . "conquered Bulgaria" . . . "Byzantine domination" . . "at war" . . "wars" . . . . . "war with Bulgaria" . "decades-long attacks" . . "Unsuccessful campaigns against Bulgaria" . "Kingdom of Croatia" . "conquest of Bulgaria in 1018" . "wars with Bulgaria" . . . . "recently subdued" . "campaigning in Bulgaria" . . "Bulgarian wars" . "restored" . . . "Byzantine conquest" . . . "its conquest by Byzantium" . "conquest of Bulgaria" . . "Bulgaria fell under Byzantine rule" . . "50-year Byzantine\u2013Bulgarian war" . . "Kievan Rus'(970\u2013971)" . "their conquest of Bulgaria" . "Byzantine rule" . "retaken" . . . . "almost thirty years of war" . "constant state of war" . . . . "Bulgarian war" . . . "Byzantine Empire" .