Muhacir or Muhajir are the estimated 10 million Ottoman Muslim citizens, and their descendants born after the onset of the dissolution of the Ottoman Empire, mostly Turks but also Albanians, Bosniaks, Greek Muslims, Circassians, Crimean Tatars, Pomaks, Serb Muslims,, Adjarians, and Muslim Roma who emigrated to East Thrace and Anatolia from the late 18th century until the end of the 20th century, mainly to escape ongoing persecution in their homelands. Wikipedia