コソボ社会主義自治州
The Socialist Republic of Macedonia was the 4th largest constituent country of SFR Yugoslavia both by area and population. Within Yugoslavia, it had an internal border with the Socialist Republic of Serbia to the north and its subunit the Socialist Autonomous Province of Kosovo to the northwest, and had international borders with the People's Socialist Republic of Albania to the west, Greece to the south, and the People's Republic of Bulgaria to the east.