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Date |
Event(s) |
| 1 | 1903 | - 1903: First Flight
The Wright brothers, Orville and Wilbur, at Kitty Hawk, NC
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| 2 | 1914 | - 1914—1918: World War I
World War I
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| 3 | 1930 | - 1930—1936: Dust Bowl
damaged the ecology and agriculture of the American and Canadian prairies during the 1930s
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| 4 | 1939 | - 1939—1945: World War II
World War II
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