Johannes Gutenberg introduced moveable-type printing to Europe, laying the basis for the democratization of knowledge. In 1517, Martin Luther incited the Protestant Reformation and his translation of the Bible began the standardization of the language; the 1555 Peace of Augsburg tolerated the "Evangelical" faith (Lutheranism), but also decreed that the faith of the prince was to be the faith of his subjects (). From the Cologne War through the Thirty Years' Wars (1618–1648), religious conflict devastated German lands and significantly reduced the population.