Thrace Thrace Thrace (; Modern , "Thráki"; , "Trakiya"; ) is a geographical and historical area in Southeast Europe, now split between Bulgaria, Greece and Turkey, which is bounded by the Balkan Mountains to the north, the Aegean Sea to the south and the Black Sea to the east. It comprises southeastern Bulgaria (Northern Thrace), northeastern Greece (Western Thrace) and the European part of Turkey (East Thrace). In antiquity, it was also referred to as "Europe", prior to the extension of the term to describe the whole continent. The name "Thrace" comes from the Thracians, an ancient Indo-European people inhabiting Southeast
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.