4) Rocky Mountain Spotted Fever: This disease is caused by a bacterium known as Rickettsia rickettsia. This disease is not transmitted directly from your pet to you, but rather by ticks that your dog may carry.
Home Johann Gutenberg Johann Gutenberg. Johann Gutenberg invented the printing press in the 1450's, and the first book to ever be printed was a Latin language Bible, printed in Mainz, Germany. Gutenberg's Bibles were surprisingly beautiful, as each leaf Gutenberg printed was later colorfully hand-illuminated.
Lesson Summary. Johannes Gutenberg was a German blacksmith and inventor known for developing the first mechanical moveable type printing press. Gutenberg was born in Mainz, Germany, around 1400. His printing press is one of the most important inventions of human history and widely considered the most important invention of the modern era.