Analysis of information sources in references of the Wikipedia article "Ανεξάρτητη Μακεδονία (1944)" in Greek language version.
The key fact about Macedonian nationalism is that it is new: in the early twentieth century, Macedonian villagers defined their identity religiously—they were either "Bulgarian," "Serbian," or "Greek" depending on the affiliation of the village priest. While Bulgarian was most common affiliation then, mistreatment by occupying Bulgarian troops during WWII cured most Macedonians from their pro-Bulgarian sympathies, leaving them embracing the new Macedonian identity promoted by the Tito regime after the war.