There is no doubt that the twentieth century will be credited as the century of innovation. It may not have witnessed the building of the pyramids or the Roman aqueducts or the birth of the Italian Renaissance, but there were monumental achievements that made a profound difference in how societies live and communicate. Whether all innovations helped society achieve an improved lifestyle remains to be established. Twentieth-century innovations had the following effects:
Changed us from an agrarian society to an industrial society
Built the infrastructure of the nation
Revolutionized communication, erasing barriers of time and place
Reduced the drudgery associated with many jobs
Almost doubled longevity
Reduced work ...