What role did the Eastern Orthodox Chruch play in the Byzantine Empire?

The Eastern Orthodox Church was a central institution in the Byzantine Empire, serving as both a spiritual and political force. It helped unify the empire's diverse populations under a common faith and cultural identity, while the emperor often acted as its protector and leader. The Church influenced various aspects of daily life, governance, and art, reinforcing the divine right of the emperor and legitimizing his authority. Additionally, the Orthodox Church was instrumental in spreading Christianity throughout Eastern Europe, shaping the region's religious landscape.