 Kunyange zvazvo paive nehukama hwepedyo hwemadzinza, nhoroondo, mitauro uye zvechitendero pakati pevagari veYugoslavia neBulgaria, nyika mbiri idzi dzakazviwana dziri kumativi anopesana munguva yakatevera kupera kweHondo Yenyika I. Mushure mekugadzirwa kweYugoslavia, Humambo hweYugoslavia hwakanga hwaumbwa hutsva hwaive mamiriro ezvinhu aitsvaga kusimbisa kubudirira kweSouth Slavic mubatanidzwa wekubatanidza nepo Bulgaria yaive nyika yekudzokorora vatungamiriri vayo vaitenda kuti nyika yavo yaive nekodzero kune zvimwe zvikamu zveYugoslavia - kunyanya Vardar Banovina. Zvakafanana nemamiriro ezvinhu neHumambo hweSerbia muHondo yechipiri yeBalkanYugoslavia yakabatana neHumambo hweGirisi, Humambo hweRomania neTurkey mukumisikidza Chibvumirano cheBalkan chaive nechinangwa chekuchengetedza mamiriro ezvematongerwo enyika uye kupa pamberi pamwe chete kurwisa zvirongwa zveBulgaria munharaunda dzawo. 