What are some of the disagreements that led to the creation of the Eastern Orthodox church?

The separation of the Christian church into western and Eastern was quite anticipated on the basis of these conflicts:

-Disagreements between churches. Churches could not find agreement either in rites, in politics or in culture.

-Disagreements in politics. The main problem of the conflict on the political ground was the antagonism between emperors of Byzantium and the Roman Paami.

-Disagreement in culture. The main problem in the cultural sphere was the difference between languages. So, in the east the main language was Greek, and in the West-Latin. In other words, to read each other's literature, people were looking for translations, otherwise, they were fond of different books.