Answer:
The event that caused the split between the Roman Catholic Church and the Eastern Orthodox Church in 1054 CE is known as the "Great Schism" or the "East-West Schism." This split marked the formal separation of the Western Church (Roman Catholic) and the Eastern Church (Eastern Orthodox) and was the result of theological, cultural, and political differences that had been brewing for centuries. One of the key issues that contributed to the schism was the dispute over the authority of the Pope in Rome.
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