What is common between Orthodoxy, Catholicism and Protestantism?

What these religious denominations have in common is that they are the origins of Christianity. God is the main thing for them. But at the same time, there are many differences between Orthodoxy, Catholicism and Protestantism. So, for example, the Protestant movement arose as a counterbalance to Catholicism, even the name itself speaks of this. Orthodoxy was the eastern form of Christianity, which came from Byzantium. Catholicism was established in Italy, where the main religious center was the Vatican city.



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