How and why did the effects of Christianity on society and government differ in the west and in the Byzantine empire?

In the West, Christianity contributed to the decline of the Roman Empire and the rise of feudalism, leading to a fragmented political landscape where the Church gained significant power and influence over secular rulers. In contrast, the Byzantine Empire maintained a strong central authority, with the Church closely intertwined with the state, exemplified by the concept of caesaropapism, where the emperor held both political and religious authority. This resulted in a more unified society under a theocratic system in the Byzantine realm, while the West experienced greater regional diversity and conflict. Ultimately, these differing dynamics shaped distinct cultural and political developments in each region.