Protestantism's a movement within Christianity that originated in the sixteenth-century Protestant Reformation. It's considered to be one of the principal traditions within Christianity, together with Roman Catholicism and Eastern Orthodoxy. Anglicanism and Nontrinitarian Christianity, both of which are significantly influenced by Protestantism, are also sometimes considered separate traditions. Protestantism's associated with the doctrine of sola scriptura, which maintains that the Bible (rathe… (More on Protestant)