The Music 1920 Women get suffrage in the U.S. League of Nations is founded. Sound recording is done electronically. KDKA in Pittsburgh broadcasts first scheduled programs. The first 3-D movie arrives, requiring spectacles with one green lens and one red lens. Singers take advantage of recording studios.
Notebooks get spiral binding.
The Eveready Hour is the first sponsored radio program. 1925 First nonstop trans-Atlantic solo flight. The first all-electric phonograph is built. France puts together the first wide-screen film. 1926 Radio network NBC is formed.