One of the main things that brought an increase in income and growth in the GNP for the United States during the twenties was "stock market speculation," since during this time--known as the "roaring 20s"--there was a great deal of stock market investment, which (temporarily) spurred growth.
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Explanation:
The period is named after the capital city of heian kyo or modern kyuto.
23rd president of the united States 1833 - 1990