| 1903 First powered flight by Wright brothers |
| 1905 Einstein's Special theory of relativity |
| 1905 Rutherford's Nuclear model of atom |
| 1906 Vitamins discovered by Hopkins; |
| 1906 first sound radio broadcasting |
| 1909 First powered flight by Wright brothers |
| 1909 Einstein's Special theory of relativity |
| 1909 Vitamins discovered by Hopkins; |
| 1909 first sound radio broadcasting |
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| 1910 Rutherford's Nuclear model of atom |
| 1914 35mm camera are all invented |
| 1914 18 World War I 20 million deaths |
| 1915 Einstein's General Theory of Relativity |
| 1916 First Tank developed |
| 1916 first Jazz recordings |
| 1919 League of Nations formed |
| 1919 Rutherford splits atom |
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| 1921 Marconi makes first Radio Broadcast |
| 1922 Insecticide developed |
| 1923 First 'Talkie' Movie |
| 1924 Insecticide developed |
1927 Lindbergh flies Atlantic
Spirit of St. Louis 1957 |
| 1928 Discovery of Penicillin |
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| 1930 Coward's Private lives book |
| 1933 Marconi makes first Radio Broadcast |
| 1939 DDT insecticide developed |
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| 1939 - 45 World War II 55 million including holocaust Chinese revolution deaths |
| 1942 Fermi builds Nuclear reactor |
| 1943 Aqualung by Cousteau Gagnan |
| 1945 Atomic bombs dropped on Hiroshima Nagasaki;
End of War |
| 1946 Development of Computers |
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