Followers: 1.1 billion worldwide
Date Founded: 325 A.D.
Location Founded: Rome, Italy
Founders: Constantine, Licinius
Books Outside the Bible: Apocrypha (Tobit, Judith, Wisdom, first and second Maccabees, etc.)
Catholicism is one of the most popular religions worldwide. It began with two major events. Firstly, Constantine and Licinius signed the Edict of Milan in 312 which legalized Christianity. Secondly, the Council of Nicea lead by Constantine in 325 unified Christianity with some pagan modifications, thus giving Catholicism.
I would not categorize Catholicism under Christianity because it does not fit any of the definitions of Christianity as we discussed above. Catholics believe that salvation is not a free choice, but requires work with the guidance of church leaders. Also, they believe in purgatory, which is a place between heaven and hell where you can finish paying for your sins. They also have seven sacraments, which is not seen in any branch of Christianity. For more details, see my article on Catholicism.
Return from Catholicism to Christian Denomination Beliefs