Slavic paganism
White Serbs, a Slavic tribe from White Serbia first settled in an area near Thessaloniki on the Balkans and in the 6th and early 7th century, established the Serbian Principality by the 8th century. The serbian rulers adopted the Byzantine Rite in 870. Serbians adopted well the new religion and, unlike in the countries above, there were not any pagan rebellions against the Christianity.