National Radio Day in US

The word "broadcasting" is actually a mid 18th century agricultural term that means "wide scattering of seeds." The word didn't become a term related to radio until the 20th century, when the first radio broadcasts were created. Like with broadcast sowing, radio broadcasting also involves a large scattering of stuff: radio waves, songs, and entertainment.

On November 2, 1920, station KDKA made the nation's first commercial broadcast (a term coined by Conrad himself). They chose that date because it was election day, and the power of radio was proven when people could hear the results of the Harding-Cox presidential race before they read about it in the newspaper.

According to the source, there were 15,445 commercial radio stations in the United States in 2020, five down from the previous year but still more than double the amount of stations in 1970.