About the book: 1985 / The book traces the origin and development of statehood among the Slavs of the Balkan Peninsula during the period of collapse Eastern Roman Empire: Byzantium, First Bulgarian Kingdom, Serbian state, Croatian state, statehood of Dalmatian cities; interethnic connections and interstate relations in the 6th–12th centuries are shown in detail. in the region and with Europe, socio-economic, socio-political structure of these early state formations, demography, the role of the church.