Hello!
Gutenberg created the Printing Press in 1450. At the time, books were very luxurious/expensive because it would take a lot of time and effort to print out the pages by hand especially the bible. It also was very revolutionary (a big dramatic change) to learning and education in schools enabling a mass of books and knoledge in Europe.
I really hoped this helped! I also learned about this unit and this is what I know!