A major branch of Christianity that developed in the Eastern Roman Empire (Byzantine Empire), this faith tradition is characterized by its unique theological interpretations, liturgical practices, and organizational structure. Differing from Roman Catholicism, it emphasizes conciliar authority, the use of icons, and a distinct understanding of the Trinity. Its geographical influence historically centered on areas encompassing modern-day Greece, Russia, and the Balkans.
This religious system played a pivotal role in shaping the cultural and political landscapes of various regions. It provided a unifying force within the Byzantine Empire, influencing art, architecture, and legal codes. Furthermore, its missionary activities led to the conversion of numerous Slavic peoples, thereby extending Byzantine influence and creating lasting cultural ties between these regions and the Eastern Roman world. The enduring legacy is visible in the architectural styles of churches, the persistence of Cyrillic script, and the continuation of specific religious traditions in several countries.