Johann Gutenberg, a German from Mainz in the 1940s, is the one who designed and invented printing, one of the most important technical advances in history.
Much earlier books were all printed by hand and first made of wood, and then much later, bronze. However, this was not a quick process and these books could not be mass produced. Gutenberg invented the Gutenberg press, a way in which books, especially the Bible, the Gutenberg Bible, could be mass produced at a cheaper rate by using movable press. This began the process of making book available for everyone, including the rich and the poor.