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,
Arabs in Turkey Arabs in Turkey Turkish Arabs (, ) refers to citizens and residents of Turkey who are ethnically Arab. Beside the large expat and diaspora communities in Istanbul and other larger cities, south and southeastern provinces have a significant Arab community. Turkish Arabs are mostly Muslims living along the southeastern border with Syria and Iraq in the following provinces: Batman, Bitlis, Gaziantep, Hatay, Mardin, Muş, Siirt, Şırnak, Şanlıurfa, Mersin and Adana. The Arabs in eastern part of the border consist of many Bedouin tribes in addition to other Arabs who settled there before Turkic tribes came to Anatolia from Central Asia