What Are The Major Differences Between Catholicism, Eastern Orthodox, And Protestantism?

All three are completely Christian.

Roman Catholicism believes in the Real Presence...many Prots do not. Catholics emphasize church custom maybe don’t recognize that Greek Orthodox copy their head bishop to the bishop of Jerusalem as well as they.

Protestants put emphasis on "Scripture Only. They believe in the punishment for sin through the death and rebirth of Jesus Christ. They try to follow a Biblical faith and church customs maybe in a more minimal simple way.

Eastern Orthodoxy is very much like the Roman Catholicism, but they differ on the Holy Spirit. They would not say that the father sent the son and the son sent the spirit. They would say the father sent the son and spirit.

Very little difference . Roman catholics were formed first so the other two I guess can be called of shoots of it, next came eastern orthodox which happened when one of the popes decided too move too constantinople and be pope there instead of rome. And lastly protestantism started when a fellow by the name of Matin Luther decided that catholicism was too strict and reformed the church making it more people friendly I call it catholic lite LOL.Ltherans were the first protetants around the 1600s I believe.