Ameliorate Gutenberg

Directions: 

Students should ameliorate the following sentences, in red. There are  missing commas, a missing apostrophe, and words that needs to be capitalized.

Johannes Gutenbergs printing press mass-produced books that led to the renaissance protestant reformation scientific revolution and the enlightenment.

suggested answer:
Johannes Gutenberg's printing press mass-produced books that led to the Renaissance, Protestant Reformation, Scientific Revolution, and the Enlightenment.

1.  Gutenberg Press short history

2. video showing actual use of Gutenberg's Printing Press.