Students should ameliorate the following sentences, in red. Yes, there are two sentences.
Johannes gutenbergs printing press allow for mass production of writings and the spread of knowledge and the age of enlightenment his major work are the Gutenberg bible.
Johannes Gutenberg's printing press allowed for mass production of writings, the spread of knowledge, and the Age of Enlightenment; his major work was the Gutenberg Bible.
1. video showing the historical background for the Printing press.
2. video showing actual use of Gutenberg's Printing Press.