the look for a woman was very conservative- hair up, tight corsets, in the early 1900's. corsets passed, hemlines raised, and necklines became much lower in the 20's. Flappers(young rebellious women) wore lighter/brighter dresses with accesories and jewelry.
After a few hundred years of a certain type of music the rise of jazz started.This was a positive aspect because as the musical style changed, those musically educated were not afraid of playing what they wanted
its use for military and communication during war, now the efficiency and supply was rising.in the 1920s, the radio was used widely for entertainment like: advertisements, newspapers, music, listening to the news.