1 espace mondial acteurs enjeux systèmes ghassan salamé séance 5 information sources the history of communication inventors about com media project promoting study from petroglyphs to pixels irving fang hosted by school journalism and mass university minnesota affordable phones phone warehouse a d v e n t u r s in c y b o 2500 years communications quelques reperes dans l histoire des humaines de antiquite la fin du xixe siecle 3500 bc 2900 phoenicians develop an alphabet sumerians cuneiform writing egyptians hieroglyphic 1400 oldest record china on bones 1270 first encyclopedia is written syria 900 very postal service for government use 530 greeks start library 500 170 papyrus rolls early parchments made dried reeds portable light surfaces 200 100 human messengers foot or horseback common egypt relay stations built sometimes fire messages used
