I don't know my friend I will ask others
The art of praying spread. hope this helps
The correct answer is religious persecution and here's why:
The Mongol rule occurred at the same time but was not as important as religious persecution. Muslim rule was common earlier during the 6th century, while intellectual oppression was not a recurring issue.
The primary cause of the great schism was due to disputes over the authority of the pope. The Roman Pope claimed he held authority over the four eastern patriarchs, while the four eastern patriarchs claimed that the primacy of the patriarch of Rome was only honorary, and thus had authority only over Western Christians.
Though normally dated to 1054, when Pope Leo IX and Patriarch Michael I excommunicated each other, the East -West Schism was really a result of an extended period of estrangement between the two bodies of Churches.
They invaded other countries without provocation in order to add teritory
