Pedzisa mutsara unotevera: Muzana remakore rechi11, Umambo Hwokutanga hweBulgaria hwakaparara pahwakarwiswa neRussia neByzantium, uye hwakava rutivi rwoUmambo hweByzantium kusvikira muna 1185. Ipapo,
kumukira kukuru kwakatungamirwa nehama mbiri, Asen naPeter veimba yaAsen, vakadzorera nyika yeBulgaria kuti vaumbe Humambo hweChipiri hweBulgaria. Mushure mekusvika pakukwirira kwayo mumakore ekuma 1230, Bulgaria yakatanga kuderera nekuda kwezvinhu zvinoverengeka, kunyanya nzvimbo yayo yenzvimbo iyo yakaita kuti ive panjodzi yekurwiswa panguva imwe chete nekupinda kubva kumativi mazhinji. Kumukira kwavarimi, chimwe chezvinhu zvishomanene zvakabudirira zvakadaro munhau, kwakagadza mufudzi wenguruve Ivaylo saMambo. Kutonga kwake kwenguva pfupi kwakanga kuchikosha mukudzorera <unk>zvimwe zvishoma<unk>kuvimbika kwehurumende yeBulgaria. Nguva yakabudirira zvikuru yakatevera pashure pa 1300, asi yakaguma muna 1371, apo kupesana kwemapoka kwakaita kuti Bulgaria ipatsanurwe kuva Tsardoms duku nhatu. Pakazosvika 1396, vakanga vava pasi poUmambo hweOttoman. VaTurkey vakaparadza gadziriro yechiBulgaria yavakuru vakuru navakuru vakuru vechechi, uye Bulgaria yakaramba iri nharaunda yakabatanidzwa yoUmambo hweOttoman kwamakore 500 akatevera.