HISTOR smoke signals Chinese soldiers used them to warn their commanders in 1800 BCE. messenger birds, Abbasids started to use them in 1150. the printing machine Johannes Gutenberg invented it in 1450. the telegraph Samuel Morse invented it in 1840s. the telephone Alexander Graham Bell invented it in 1876. 1. In 1800 BCE, people communicated via 2. People started to keep in touch with each other via. 3. ople used telegraph for communication right before the invention of 4. In 1896, people started to communicate via. 5. In 1927, people started to use. 6. After the invention of. B. Answer the questions. 1. Who invented the radio? 2. What did John Logie Baird invent? 3. How did people communicate before telephone? 4. When did Martin Cooper invent the cell phone? 5. When did the Internet become a reality? glish UP 8 - Student's Book the Internet Vinton Cerf made it real in 1983. the cell pho Martin Coop to communicate. in 1973, communication became easier and faster. 1973. the television John Logie B invented it in 1927 the radio Guglielmo Marconi invented it in 1896. before the printing machine.
