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The 1920s (pronounced "nineteen-twenties" often shortened to the "' 20s" or the "Twenties") was a decade that began on January 1, 1920, and ended on December 31, 1929. . Primarily known for the economic boom that occurred in the Western World following the end of World War I (1914–1918), the decade is frequently referred to as the "Roaring Twenties" or the "Jazz Age" in America and Western ...
The American Nation: A History of the United States: AP Edition (2008) Egerton, Douglas R. et al. The Atlantic World: A History, 1400–1888 (2007), college textbook; 530pp; Elliott, John H. Empires of the Atlantic World: Britain and Spain in America 1492–1830 (2007), 608pp excerpt and text search, advanced synthesis
The 1920s saw dramatic innovations in American political campaign techniques, based especially on new advertising methods that had worked so well selling war bonds during World War I. Governor James M. Cox of Ohio, the Democratic Party candidate, made a whirlwind campaign that took him to rallies, train station speeches, and formal addresses ...
American researchers made fundamental advances in telecommunications and information technology. For example, AT&T 's Bell Laboratories spearheaded the American technological revolution with a series of inventions including the light emitting diode ( LED ), the transistor , the C programming language , and the UNIX computer operating system.
Until the introduction of iron ships, the U. S. made the best in the world. The design of U.S. ships required fewer crew members to operate. U.S. made ships cost from 40% to 60% as much as European ships, and lasted longer. [9]: 126 The screw propeller was tested on Lake Ontario in 1841 before being used on ocean ships.
1920s: Culture Wars. As European economies recovered and the USA boomed in the wake of World War I, the number of Americans living in cities exceeded the number on farms for the first time.
In the 1920s, American policy was an active involvement in international affairs, while systematically ignoring the League of Nations. Instead Washington set up numerous diplomatic ventures, and used the enormous financial power of the United States to dictate major diplomatic questions in Europe.
Industrializing America: The Nineteenth Century (1995) Mokyr, Joel The Second Industrial Revolution, 1870–1914 (1998) Mokyr, Joel. The Enlightened Economy: An Economic History of Britain 1700–1850 (2010) Rider, Christine, ed. Encyclopedia of the Age of the Industrial Revolution, 1700–1920 (2 vol. 2007) Roberts, Wayne.