Decentralized Administration of Macedonia and Thrace municipalities and regions, in this case the 60 municipalities of Central Macedonia and of Eastern Macedonia and Thrace, and the two regions themselves. Covering an area of "Macedonia and Thrace" is the largest of the seven decentralized administrations by area, and with an overall population of it is also the second most populated one, following the Decentralized Administration of Attica. In the revised European NUTS nomenclature, the two regions of "Macedonia and Thrace" together with the two regions of the Decentralized Administration of Epirus and Western Macedonia form the first level NUTS region EL5 (Voreia Ellada). The Decentralized Administration is
Geography of Turkey of the sizable Greek-speaking community of western Turkey were forced to resettle in Greece, while the majority of the Turkish-speaking residents of Thrace who were not forced out during the Balkan wars were removed to Turkey. The boundary with Bulgaria was confirmed by the Treaty of Lausanne (1923). Since 1991 the more than boundary with the former Soviet Union, which was defined in the 1921 Treaty of Moscow (1921) and Treaty of Kars, has formed Turkey's borders with the independent countries of Armenia, Azerbaijan, and Georgia. The boundary with Iran was confirmed by the Treaty of Kasr-ı Şirin in 1639.