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During the World War I, British BBC company took control of US wireless devices.

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Radio amateurs, who set up their own radio sets, became a major determining factor in wireless telephony use of early broadcasting development in U.S.

Wireless telephone was first use in domestic use.

G.I. Bill of Rights encourages home ownership and higher levels of education by charging very low or no interest at all on loans for veterans, which caused more than 77 million children were born between 1947 and 1960. This social phenomenon is known as Baby Boom.

Radio programs and forms took shape in the 1930s, and the basic idea and the most significant contribution of radio form is seriality, stringing episodes of program over days weeks, months, even years.

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