Macedonians or Macedonian Bulgarians (), sometimes also referred to as Macedono-Bulgarians, Macedo-Bulgarians, or Bulgaro-Macedonians are a regional, ethnographic group of ethnic Bulgarians, inhabiting or originating from the region of Macedonia. Today, the larger part of this population is concentrated in Blagoevgrad Province but much is spread across the whole of Bulgaria and the diaspora. History The Slavic-speaking population in the region of Macedonia had been referred to both (by themselves and outsiders) as Bulgarians, and that is how they were predominantly seen since 10th, up until the early 20th century. According to Encyclopædia Britannica, at the beginning of the 20th century the Macedonian Bulgarians constituted the majority of the population in the whole region of Macedonia, then part of the Ottoman Empire. The functioning of the Bulgarian Exarchate then aimed specifically at differentiating the Bulgarian from the Greek and Serbian populations on an ethnic and linguistic basis, providing the open assertion of a Bulgarian national identity. However one basic distinction between the political agendas of local intelligentsias was clear. The Macedonian Greeks and Serbs followed, in general, the directives coming from their respective centers of national agitation, while by the Bulgarians the term Macedonian was acquiring the significance of a certain political loyalty, that progressively constructed a particular spirit of regional identity. The Balkan Wars (1912–1913) and World War I (1914–1918) left Ottoman Macedonia divided between Greece, Serbia and Bulgaria and resulted in significant changes in its ethnic composition. The immediate effect of the partition of Ottoman Macedonia were the nationalistic campaigns in areas under Greek and Serbian administration, which expelled Bulgarian churchmen and teachers and closed Bulgarian schools and churches. As a consequence a sizable part of the Slavic population of Greek and Serbian (later Yugoslav Macedonia), fled to Bulgaria or was resettled there by virtue of a population exchange agreements (Treaty of Neuilly-sur-Seine, Politis-Kalfov Protocol). Within Greece, the Macedonian Slavs were designated "Slavophone Greeks", while within Serbia (later within Yugoslavia) they were officially treated as "South Serbs". In both countries, schools and the media were used to disseminate the national ideologies and identities, and also the languages, of the new ruling nations, the Greeks and the Serbs. These cultural measures were reinforced by steps to alter the composition of the population: Serb colonists were implanted in Yugoslav Macedonia, while in Greek Macedonia, the mass settlement of Greek refugees from Anatolia definitively reduced the Slav population to minority status.