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.
If one process started the chain reaction of events that led to the invention of the printing press, it was the rise of towns in Western Europe that sparked trade with the outside world all the way to China.t was also Gutenberg who combined all these disparate elements of movable type, rag paper, the squeeze press, and oil based inks to invent the first printing press in 1451. The first printed books were religious in nature, as were most medieval books.