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Harding becomes the 29th president of the US
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barred Chinese immigration
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Calvin becomes the 30th president of the US
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Completed the main street of America
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Hoover became the 31st president of the US
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Southern great plains suffered through a serve drought
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Pluto was discovered by Clyde W. Tombaugh
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when completed, it was the tallest building in the world.
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FDR becomes the 32nd president
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Prohibition ended
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Hitler becomes chancellor in Germany
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launches the New Deal to combat the Depression
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Social Security is enacted in the US
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Austria was annexed to Germany
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