6. was a german monk who criticized the practices of the catholic church. he is said to be the father of the reformation. he nailed the to the door of the church in wittenburg, germany in 1517.

Martin Luther was a German monk who criticized the practices of the Catholic Church. He is said to be the father of the Reformation. He nailed the paper to the door of the church in Wittenburg, Germany in 1517. 

Hope this helps !

Photon