Macedonia (Greece)
Macedonia (; , "Makedonía" ) is a geographic and former administrative region of Greece, in the southern Balkans. Macedonia is the largest and Greek region, with a population of 2.38 million in 2017. The region is highly mountainous, with most major urban centres such as Thessaloniki and Kavala being concentrated on its southern coastline. Together with Thrace, and sometimes also Thessaly and Epirus, it is part of Northern Greece. It also contains Mount Athos, an autonomous monastic region of Greece.
Treaty of Bucharest (1913)
The eastern frontier of Serbia was drawn from the summit of Patarika, on the old frontier, and followed the watershed between the Vardar and the Struma rivers to the Greek-Bulgarian boundary, except that the upper valley of the Strumica remained in the possession of Bulgaria. The territory thus obtained by Serbia engulfed central Vardar Macedonia, including "Ochrida, Monastir, Kossovo, Istib, and Kotchana, and the eastern half of the sanjak of Novi-Bazar". These territories would today include Novi Pazar in Serbia, the disputed territory of Kosovo, and Ohrid, Štip, Kočani and Bitola in present-day Republic of Macedonia. By this arrangement, Serbia increased its territory from 48,300 to 87,780 km2 and its population by more than 1.5 million.