have resided in the Balkans for numerous centuries, often referred to as "Turkish Gypsies", the following histories apply for religious beliefs: Bosnia and Herzegovina and Montenegro – Islam is the dominant religion among the Roma. Bulgaria – In northwestern Bulgaria, in addition to Sofia and Kyustendil, Christianity is the dominant faith among Romani people (a major conversion to Eastern Orthodox Christianity among Romani people has occurred). In southeastern Bulgaria, Islam is the dominant religion among Romani people, with a smaller section of the Romani population declaring themselves as "Turks", continuing to mix ethnicity with Islam. Croatia – After the Second World War a large number of Muslim Roma relocated to Croatia (the majority moving from Kosovo). Their language differs from those living in Međimurje and those who survived Ustaše genocide. Greece – The descendants of groups, such as Sepečides or Sevljara, Kalpazaja, Filipidži and others, living in Athens, Thessaloniki, central Greece and Greek Macedonia are mostly Orthodox Christians, with Islamic beliefs held by a minority of the population. Following the Peace Treaty of Lausanne of 1923, many Muslim Roma moved to Turkey in the subsequent population exchange between Turkey and Greece. Kosovo – The vast majority of the Roma population in Kosovo is Muslim. North Macedonia – The majority of Roma people are followers of Islam. Romania – According to the 2002 census, the majority of the Romani minority living in Romania are Orthodox Christians, while 6.4% are Pentecostals, 3.8% Roman Catholics, 3% Reformed, 1.1% Greek Catholics, 0.9% Baptists, 0.8% Seventh-Day Adventists. In Dobruja, there is a small community that are Muslim and also speak Turkish. Serbia – Most Roma people in Serbia are Orthodox Christian, but there are some Muslim Roma in Southern Serbia, who are mainly refugees from Kosovo. Other regions In Ukraine and Russia, the Roma populations are also Muslim as the families of Balkan migrants continue to live in these locations. Their ancestors settled on the Crimean peninsula during the 17th and 18th centuries, but some migrated to Ukraine, southern Russia and the Povolzhie (along the Volga River). Formally, Islam is the religion that these communities align themselves with and the people are recognized for their staunch preservation of the Romani language and identity. In Poland and Slovakia, their populations are Roman Catholic, many times adopting and following local, cultural Catholicism as a syncretic system of belief that incorporates distinct Roma beliefs and cultural aspects. For