Federation of Western Thrace Turks in Europe be declared as having lost Greek nationality...” The Turkish minority was forced to migrate. While the vast majority of migration wave was towards Turkey, some groups chose to migrate to other European countries, in particular to Germany. Today, the population of Western Thrace Turks in Germany amounts to 30,000. A considerable number of Western Thrace Turks live in other EU Member States, such as the Netherlands, England, Sweden, France, Belgium and Austria. The need to keep alive their cultural values and maintain solidarity in their host countries led the Western Thrace Turks to create collectively created associations. In Germany, the
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.