Why did Christians consider the bishop of Rome the most honored bishop of all?

The primacy of the bishop of Rome is largely derived from his role as the apostolic successor to Saint Peter, to whom primacy was conferred by Jesus, giving him the Keys of Heaven and the powers of "binding and loosing", naming him as the "rock" upon which the church would be built.

Explanation:

it was a act of seld fesnse more over it was a peace treaty between the fogein contunries.

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