What spread of the ideas of humanism did the invention and development of printing play?

Due to the fact that in modern times more books were printed and they became more or less accessible, at the same time the number of people who could buy books and gain new knowledge, including the ideas of humanism, grew. This became one of the key reasons for the transition of society from the Middle Ages to modern times and from Catholicism to the Reformation. People understood that they had the right to freedom of expression, but at the same time, there were institutions that severely limited them. For this reason, people were eager to bring about change.