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In the 1920s when radio was first catching on, the idea of a popular culture was somewhat different than what we have today. For there to be a pop-culture, there needs to be a way for media to reach the masses. Up until then, the extent of popular media was done in print, and was limited to those who could read and had the time to do so. But, with the invention of moving pictures and the breakthroughs in mass producing personal radios, the concept of bringing a single product to an entire nation was born and with it the concept of pop-culture.