Martin Luther, a German priest and theology teacher, nailed his "Ninety-Five Theses against Indulgences" on a church door in Germany in 1517. The main idea of the theses -- that Catholic doctrine was erroneous in several fundamental ways -- sparked the division of the Church into Catholic and Protestant. The Reformation, as that event is known, produced several new churches with different spiritual and institutional beliefs than Catholicism: Lutheran, Reformed Protestant and Anabaptists among them. In 1521, the Edict of Worms outlawed Protestantism, but many European rulers converted anyway. Eventually Protestantism took root in many countries.