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United States,, Great Britain, France and Italy tried to form an alliance to prevent another world war. (1920)
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- Women's Suffrage (1920)
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- Nationwide ban of the import and sale of alcoholic beverages (1920-1923)
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- Great Kanto Earthquake (1923)
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- Hitler appointed chancellor of Germany (1933)
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- 1,140,000 communist party members are expelled by Stalin (1933-1934)
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- The German Reichstag passes the enabling act (1933)
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- Leon Blum's popular front government comes to power in France ( 1936-1937)
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More submarginal lands were put into production (1920's)
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Great Depression starts and markets crash. (1929)
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The dust bowl begins (1931)
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Federal Aid (1932)
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The term "Dust bowl" was made. (1935)
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21% of all rural Families in the Great Plains were receiving federal emergency relief. (1937
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The Dust Bowl ends (1942)
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Another severe Drought spread across the US but the impact were lessened due to lessons learned from the dust bowl. (1950)
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- The Civil Rights Movement
- The Students Movement
- The Anti-Vietnam War Movement
- The Woman's Movement
- The Gay Rights Movement
- The Environmental Movement