 Nhau dzakazvimirira muEurope pakati pa1878 na1918 dzaiwanzoona vaSlav veMacedonia nenzira mbiri: sevaBulgaria uye sevaSlav veMacedonia. Nyanzvi yeGerman Gustav Weigand aive mumwe wevamiriri vakakurumbira vechimiro chekutanga nemabhuku Ethnography of Macedonia 1924, yakanyorwa 1919 uye chikamu ne The Aromanians 1905. Munyori akarondedzera mapoka ose emarudzi anogara muMakedhonia, akaratidza empirically ukama hwepedyo pakati pemitauro yekumadokero yeBulgaria nemitauro yeMacedonian uye yakatsanangura yekupedzisira seBulgaria. Sangano reInternational Commission rakagadzwa neCarnegie Endowment for International Peace muna 1913 kuti riongorore zvikonzero nemafambiro ehondo dzeBalkanyakataurawo nezvevaSlav veMakedhonia sevaBulgaria mumushumo wayo wakabudiswa muna 1914. Dare racho raiva nenhengo sere dzaibva kuGreat Britain, France, Austria-Hungary, Germany, Russia neUnited States. 