essay24 - RhettS.James MarcioCarvalheiro History170...

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AMERICAN CIVILIZATION UNITED STATES HISTORY 170 Rhett S. James Marcio Carvalheiro History 170 Chapter 24 November 24, 2008 The New Era 1. Science and Technology On the hole, airplanes remained curiosities and sources of  entertainment, but technological advances, the development of the radial  engine and the creation of pressurized cabins were laying the groundwork  for the great increase in commercial travel in the 1930’s and beyond.  Trains became faster and more efficient as well with the development of  the diesel-electric engine. Electronics, home appliances, plastics and  synthetic fibers such as nylon, aluminum, magnesium, oil, electric power,  and other industries fueled by technological advances, all grew  dramatically. Telephones continued to proliferate. By the late 1930s, there  were approximately 25 million telephones in the United States,  approximately one for every six people. 1 2. Region/Great Wealth American labor experienced both the successes and the failures of  the 1920’s as much as any other group. On the one hand, most workers 
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