What event made the Great Schism forever permanent was the?

Answer 1

Roman Catholic AnswerIn the Catholic Church, the Great Schism usually refers to the two, sometimes, three popes and anti-popes who were all claiming to rule the Catholic Church at the same time during the 14th century. That sad event which ran for decades ended with only one Holy Father in Rome, so it was hardly forever permanent. Many secular scholars tend to refer to the Eastern Schism as the Great Schism, even though this is not technically correct. Nevertheless, the Eastern Schism, in the eleventh century, when the Orthodox Church split from the Catholic Church is not permanent, there has already been at least one reconciliation, although it did not last a hundred years, and I am sure that it will be healed permanently in the future, the Holy Father, and the patriarchs are in talks now, so it is not permanent either.

Answer 2

Fourth Crusade.