Prior to 1920, radio was not viewed as a viable commercial medium.

Name: Prior to 1920, radio was not viewed as a viable commercial medium.
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Radio was primarily viewed as a form of communication and entertainment for hobbyists or amateur enthusiasts before the 1920s. It wasn't until the growth of commercial radio broadcasting in the 1920s that it became a viable commercial medium.

Prior to 1920, Radio Was Not Viewed as a Viable