Here's how Protestantism works. Some people go to church together. One day they get into an argument over whether or not Adam had a naval. The church splits over the argument into two churches; the First Church of the Navalites and the First Church of the Anit-Navalites. That's how denominations are born. They are all rooted in Protestantism, which is the original form of the argument; some Catholics argued over whether or not indulgences were correct doctrine and the result was the protectors of the faith (the Catholics) and the protestors of the faith (the Protestants - known as the Lutherans after the last name of their founder, Martin Luther.) Every single Protestant church/denomination since is an offshoot of similar doctrinal arguments about this that or the other.
Thus endeth the lesson for the day.
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