On 8 November 392, Roman Emperor Theodosius I issued a decree solidifying Christianity as the official state religion of the Roman Empire, marking a transformative milestone in the history of Western civilisation.
By enforcing Nicene Christianity's dominance and banning all pagan practices and rituals, Theodosius not only unified religious practices across his vast domain but also established the Church’s burgeoning influence over the state, shaping centuries of cultural, legal, and political development throughout Europe and beyond.
This declaration ultimately paved the way for Christianity to become deeply intertwined with imperial governance and the socio-political fabric of medieval Europe.
