 Nyorai kuenderera mberi kweiyi ndima - Imba yemamongi yakavambwa mushure mekudzingiswa kwechiKristu kweBulgaria muzana ramakore re9 panguva yekutonga kwaBoris I r. 852889. Yakaparadzwa muna 971 nevaByzantine pavakapamba Preslav mushure mekupinda kweSviatoslav muBulgariauye rakapambwa uye rakaparadzwa kakawanda nePechenegs neCumans muzana ramakore rechi11 nerechi12 panguva yekutonga kweByzantine yeBulgaria. Maererano nevatsvakurudzi, imba yemamongi yakanga iri nzvimbo inokosha yezvinyorwa munguva yeHumambo hweBulgaria Hwekutanga uye nzvimbo dzinokosha zvikuru dzePreslav Literary School, ikoko vadzidzi veVatsvene Cyril naMethodius, Clement weOhrid naNaum wePreslav vakanga vashanda. 