This volume covers the era from Leo III the Isaurian to Michael III. The work depicts in detail and in detail the most interesting vicissitudes of the history of the Byzantine state, including in terms of inter-church relations between Rome and Constantinople. Numerous events of the times of Ecumenical Councils are given, the role and forms of participation of emperors in the activities of the Catholic Church are revealed. The composition is equipped with portraits of all emperors of the Byzantine Empire, maps and wide reference material. For all interested in the history of Byzantium, the Church, law and politics, as well as students of law and history faculties.