1921-1941

By Cooper.gil
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    American-Indian Wars

    These wars were between the Americans and the Indians usually over land.
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    Woodrow Wilson's Presidency

    The first ladies were Ellen Axson Wilson and
    Edith Bolling Galt Wilson.
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    Warren G. Harding's Presidency

    The first lady was Florence Kling Harding.

  • Television is invented

    Invented by Vladimir Kosma Zworykin.
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    Calvin Coolidge's Presidency

    The first lady was Grace Goodhue Coolidge.

  • Electronic television system is invented

    Invented by Philo Taylor Farnsworth.

  • Iron lung is invented

    Invented by Philip Drinker.
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    Herbert Hoover's Presidency

    The first lady was Lou Henry Hoover.
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    Franklin D. Roosevelt's Presidency

    The first lady was Eleanor Roosevelt.

  • Radar is patented

    Patented by Robert Watson-Watt.

  • Helicopter is invented

    Invented by Igor Sikorsky.
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    World War II

    This was the second world war. It included a lot of different countries from all around the world. It was against the allies and the axis powers.

  • The Battle of Britain

    This battle was one of the most important battles in World War II. The Germans went to capture Britain but didn't succeed and Britain was able to recover from that attack and become better.