Before the split in 1504 the leaders of the eastern church and western church were

Charlemagne's crowning made the Byzantine Emperor redundant, and relations between the East and the West deteriorated until a formal split occurred in 1054. The Eastern Church became the Greek Orthodox Church by severing all ties with Rome and the Roman Catholic Church — from the pope to the Holy Roman Emperor on down.

when arthor pulls out the sword

explanation:

becase he becomes !