In the byzantine empire, who had the final say on church matters?

In the byzantine empire, The Emperor had the final say on church matters.

Byzantine empire was known as one of the empire that put a really high value on religion and churches matter. On that empire, the political matter within the empire and the religious matter intertwine with each other
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C. it's a true fact. i know because we are studying about the great depression. so it best illustrates a claim of fact. thx. have a wonderful day!

We don’t know what the question is buddy