Between 1879 and 1920, the Serbian Orthodox community was governed by at least six ecclesiastical jurisdictions (Carlowitz, Montenegro, Dalmatia and Cattaro, Belgrade, Bosnia and Herzegovina, and Southern Serbia, the latter two dependent on Patriarchate in İstanbul). Serbia participated in the First World War on the side of the victors, which prepared the ground for the advent of the Yugoslav Kingdom of Serbs, Croats, and Slovenes. The need for ecclesiastical integration led to another appeal in 1919 to Patriarchate in İstanbul, whereby consent was requested to integrate the six jurisdictions into one united patriarchate of all Serbs. This summary of the period until the foundation of modern Montenegro also briefly reflects the history of the Montenegrin Orthodox Church (MOC). Montenegro was an independent state until the end of the First World War, and Orthodoxy was a state religion. The historical development of the Orthodox Church in the Balkans, its strong role in the internal/international politics of the countries and formation of the national identity, and its dominance in the state structures are unique examples of explaining the concept of theopolitics. Parallel to the formation of national identity, the fact that religious identity dominates and directs the rulers and leaders of the state comes to light as one of the main features of orthodoxy.