 Nyorai kuenderera mberi kweiyi ndima - Dzinza raKrum rinoreva mhuri yeumambo uye gare gare mhuri yeumambo yakavambwa naKhan weBulgaria Krum r. 803814, achibereka madzimambo eUmambo Hwokutanga hweBulgaria pakati pa803 na991. Munguva iyi Bulgaria yakagamuchira chiKristu, yakasvika pakukura kwayo kukuru kwenharaunda ndokutanga nguva yegoridhe yetsika nemabhuku. Pasi pokutsigirwa nemadzimambo aya Bulgaria yakava nzvimbo yokuberekerwa kwearufabheti yeCyrillic; chiBulgarian chekare chakava lingua franca yechikamu chikuru cheEastern Europe uye chakazozivikanwa sechiSlavonic chekare cheChechi. Somugumisiro wokukunda muhondo yeByzantine-Bulgarian ya913-927Umambo hweByzantium hwakaziva zita roumambo revatongi veBulgaria neChechi yeOrthodox yeBulgaria sePatriarchate yakazvimirira. 