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In this chapter, technological advances consisted more than just inventions, but also ideas and practices.
For example:
One of the most important tech that was invented during the time was the radio. The radio was found in most American Households, and had influence in many people's lives. Roosevelt would host "fireside chats" in which he would discuss American affairs.
The Assembly Line was formed in this time period, therefore increasing the production of most manufacturing, processing, and building industries...

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The Great Depression left 15 million people unemployed.
Over 20% of the U.S. pop.-- unemployed
Toledo, Ohio:
80% of the people were left unemployed.
The American Dream was essentially destroyed, because opportunity for the Golden Lifestyle, and the opportunity to work yourself up from the bottom is now deceased.

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The United States had developed highly protective tariffs to help American Industry and to fund American Government. However, these tariffs encouraged countries to do the same, and foreign trade began to falter, as it became more expensive and more difficult to continue.

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Since the Assembly Line was so effective, the production of normally time-consuming products, vehicles, etc. is now much easier to accomplish. Therefore, production began to exceed demand. The Assembly Line was responsible for maintaining many American labor jobs, so when the demand for production fell, the unemployment rate rose.