Answer:
The Great Schism came about due to a complex mix of religious disagreements and political conflicts. One of the many religious disagreements between the western (Roman) and eastern (Byzantine) branches of the church had to do with whether or not it was acceptable to use unleavened bread for the sacrament of communion.
Explanation:
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It was because Adolf Hitler was in charge of Germany at that time and wanted to conquer many countries
He disliked their decision, and refused to accept it.