Albanian-speakers of Western Thrace migrated towards today's European Turkey (Eastern Thrace), especially near Istanbul. Many Muslim Albanians achieved high office in Ottoman society and many of them, most notably the Köprülü family, became Grand Viziers of the Empire. The majority of the Albanian emigration came from Northern Kosovo and the Korça region of Albania. Descendants of this immigrants would later play an important role in the National Renaissance of Albania. The number of Albanians that resided in the region is unknown, as statistical data of the Ottoman Empire were based on religious identification (millets). Thus, the Orthodox Albanians were part of the Rûm millet,
Turks of Western Thrace of Turkey, and could not be used to describe citizens of Greece; the use of the word 'Turkish' to describe Greek Muslims was held to endanger public order. This led to about 10,000 people demonstrating against the decision in Western Thrace. According to members of the Turkish minority, it was the first time ethnic Turks had taken to the streets. More than 10 newspapers are issued in the Turkish language. According to some sources, newspapers, magazines and books published in Turkey are not allowed entry into Western Thrace, and Turkish television and radio stations are sometimes jammed. According to other