(Slav)Macedonia had been Serbian by compulsion, with the use of Bulgarian forbidden. The World War II socialist partisans in (Yugoslav) Macedonia proceeded to establish a commission to create the new "official" (Slav)Macedonian literary language, which was presented to the world the following year (1945). From then on, it became the legal first language of the Macedonian Slavs, with Serbo-Croatian a recognized second language and Bulgarian officially proscribed.
The new (Slav) Macedonian literary language was based intentionally on a dialect spoken in the central Vardar area of the region, so as to be removed as far as geographically possible from both Bulgarian and Serbian linguistic contaminations. Moreover, a separate (Slav) Macedonian Cyrillic alphabet was devised to make the new language as unnecessarily different from Bulgarian as possible, with the inclusion of wholly new letters found nowhere else and a few Serbian characters thrown in for good measure. Since the (Slav)Macedonian vernacular was primarily primitive in its native development, most of the words used were better related to folktales and songs than to the modern age. "Bulgarianisms" were replaced by folk substitutes, and modern Bulgarian, Serbian, or Russian terminology for technical and other twentieth-century expressions were intentionally avoided in favor of Western, including American, terms. The result not only made literary (Slav) Macedonian as different as humanly possible from its brother Slav languages, but it created a veritable linguistic hodgepodge, which approached the French meaning of macedoine when referring to a mixed salad. Led by the Skopje socialist linguist Blaze Koneski, and given international recognition in 1952 by Yale-produced Harvard Slavic professor Horace Lunt, the artificially created and structured (Slav) Macedonian literary language ultimately provided the socialist-mandated ethnic validity for an independent (Slav) Macedonian nationality. Over four decades of state socialization and education of Macedonian Slav children in that concept may have succeeded in creating such a creature in actual fact.