Human history
Protestant Reformation started with Martin Luther and the posting of the 95 theses on the door of the castle church in Wittenberg, Germany. At first he protested against corruption such as simony or the sale of indulgences. But then it became clear that he had different ideas about the church doctrine. He thought that Christians should only read the Bible to find out what God wants from them. That meant that they did not need priests (see: Five solas). The three most important traditions that came directly from the Protestant Reformation were the Lutheran, Reformed (Calvinist, Presbyterian, etc.), and Anglican traditions.