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Warren G. Harding is inaugurated as the 29th president.
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President Harding dies suddenly. He is succeeded by his vice president, Calvin Coolidge.
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Coolidge's second inauguration.
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Charles Lindbergh makes the first solo nonstop transatlantic flight in his plane The Spirit of St. Louis.
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Herbert Hoover is inaugurated as the 31st president.
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The Star-Spangled Banner is adopted as the national anthem.
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Twentieth Amendment to the Constitution, sometimes called the “Lame Duck Amendment,” is ratified, moving the president's inauguration date from March 4 to Jan. 20.
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Franklin Roosevelt is inaugurated as the 32nd president.
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F. Roosevelt's second inauguration.