Answer:
There were several factors that played a role in how Christianity developed differently in Byzantium than in Western Europe. Two of the most important factors were political and cultural differences between the two regions.
In Byzantium, the Emperor was seen as a divine figure who was appointed by God to rule over the empire. This political arrangement had a profound impact on the development of Christianity in Byzantium, as the Emperor was closely involved in religious affairs and had significant influence over the Church. In contrast, in Western Europe, the Pope was the highest authority in the Church, and political leaders had less control over religious matters. This led to a different understanding of the relationship between Church and state in the two regions.
In addition to political differences, there were also significant cultural differences between Byzantium and Western Europe. Byzantium was a culturally diverse region that was influenced by Greek, Roman, and Eastern traditions. This led to the development of a distinctive form of Christianity that blended elements from these different traditions. In Western Europe, on the other hand, Christianity was more closely tied to the cultural traditions of the Roman Empire, which had a more homogenous culture. This helped to shape the development of Christianity in the two regions in different ways.