Answer:
Johannes Gutenberg was a German blacksmith known for inventing the mechanical movable type printing press. His printing press has been widely considered the most important invention of the modern era because it profoundly impacted the transmission of knowledge. Invented around 1439, Gutenberg's movable type printing press initiated nothing less than a revolution in print technology. His press allowed manuscripts to be mass-produced at relatively affordable costs. The 42-line 'Gutenberg Bible', printed around 1455, was Gutenberg's most well known printed item. It is considered by many to be the first 'modern' printed book.
