536
edits
Changes
Jump to navigation
Jump to search
Line 1:
Line 1: − +
no edit summary
In 1920, KDKA in Pittsburgh, Pennsylvania, became the first commercial radio station, and radio quickly developed into the center of entertainment for families. Use of radio spread most quickly in the United States, where there is freedom of speech, and slowly in other countries where speech is controlled or regulated by the government.
In 1920, KDKA in Pittsburgh, Pennsylvania, became the first commercial radio station, and radio quickly developed into the center of entertainment for families. Use of radio spread most quickly in the United States.