| Peopole once uesd drums and smopke signals to send messages across sparsely inhabited valleys. Later, theywrote on rock walls then on papyrus . Peopleinvented paper, worte letters, and sent them by foot, boat, or horseback. As history moved along, new forms of information sharing were invented. Some of these inventions changed history and our lives forever. | |
| One of the of the life-changinginventions was the printing press. Johann Gutenberg created a printing press with moveable metal type containg letters, numbers, and symbols, and in 1454, printed multiplecopies of a letter. The invention of the printing press allowed millions of inexpenxive papeer copies to be made quickly and easily. Gutenberg's press was the photocopy machine of the 15th century. Today, printing presses allow millons of books, newspapers, andmagazines to be mass produce everyday. |  |
| Paper printing created huge industries. Newspapers have billons of subscribers around the world Billions of books, magazines, advertisements, and printed materials are constantly being reproduced. Millions of new jobs were created in this printed, paper-based communications industry. Billions of trees have given up thier leafy lives to satisfy the insatiable appetite of this industry of printing presses, fax machines, photocopy machines, and millions of printers |  |