Which of these marked a long-lasting split between the western and eastern Christian churches?

Question

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The excommunication of the Orthodox patriarch by Cardinal Humbertus in 1054 marked a long-lasting split between the western and eastern Christian churches. This event is known as the Great Schism, which resulted in the formation of the Roman Catholic Church in the west and the Eastern Orthodox Church in the east. The other options mentioned significant events in the history of the papacy but did not directly lead to the split between the eastern and western churches.

Which of These Marked a Long-Lasting Split Between the Western