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
Immigration to Turkey enter through the Eastern border, which generally included all Iranians and Afghans who entered illegally. In 1923, more than half a million ethnic Muslims of various nationalities arrived from Greece as part of the population transfer between Greece and Turkey (the population exchange was not based on ethnicity, but by religious affiliation; as Turkey was seen as a Muslim country while Greece was viewed as a Christian country). After 1925, Turkey continued to accept Turkic-speaking Muslims as immigrants and did not discourage the emigration of members of non-Turkic minorities. More than 90% of all immigrants arrived from the Balkan countries.