Gutenburg started a printing press in 1451. He printed the Bible and people got to read it and learn.
Luther post 95 theses.
He found the society of Jesus. The Jesuits were one of the major spearheads of the counter reformation.
The Inquisition was a group institutions within the judicial system of the Roman Catholic Church whose aim was to combat heresy.
The Council of Trent was an Ecumenical Council of the Roman Catholic Church.
The Hugenots were members of the Protested reformed Church.
The St. Bartholomew's Day Massacre was a targeted group of assassinations, followed by a wave of Roman Catholic mob violence, both directed against the Huguenots.