How Roman Catholicism relate to the development of Christianity

Catholicism was the O.N.L.Y. form of Christianity until about 1500 a.d. when Martin Luther broke away from the Church and formed PROTESTANTISM (everything but Catholicism). Read the Bible, and you'll see why Roman Catholicism is the only Christian sect in which it all adds up, i.e. Matt26:26 & John20:23, etc. Peace!