Question

1. the great schism of 1054 was the final split between the roman catholic church and the eastern orthodox church. what event provided the final reason for this split? russias choice of eastern orthodoxy over roman catholicism as a state religion the patriarchs decision not to bless or join any of the crusades the fourth crusade, when the crusaders sacked constantinople the popes decision to organize the first crusade to jerusalem

Explanation:

The Great Schism of 1054 was a long - developing split. The Fourth Crusade, when Crusaders sacked Constantinople in 1204, further deepened the rift and can be seen as a final - straw type of event in the already strained relationship between the Roman Catholic and Eastern Orthodox Churches. Russia choosing Eastern Orthodoxy was not the final reason for the 1054 split. The Patriarch's decision regarding the Crusades and the Pope's organization of the First Crusade were not the final reasons for the 1054 split either.

Answer:

the Fourth Crusade, when the Crusaders sacked Constantinople