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.
In the 1440s, the German Johann Gutenberg began experimenting with novel, mysterious ways of approaching printing. So did many other Europeans, all looking for a faster, cheaper way to produce books. Usually, if Europeans didnât write by hand, they used hand stamps or woodcutsâan improvement, but still painfully slow.