| Event | (2)0s or (3)0s |
|---|
| Henry Ford announced 40-hour work week | |
| League of Nations established | |
| Bonnie and Clyde killed by police | |
| Car radio introduced by Chevrolet | |
| Penicillin discovered | |
| 'Gone With the Wind' book published | |
| US officially got national anthem | |
| Solo flight of Amelia Earhart across the Atlantic | |
| BBC became a public corporation | |
| First commercial radio broadcast aired | |
| World's first practical helicopter | |
| 'Time' magazine founded | |
| First FIFA World Cup | |
| Pluto discovered | |
| Polygraph invented | |
| World War II began | |
| The Great Depression began | |
| Prohibition begins in the U.S. | |
| Empire State Building completed | |
| First Volkswagen Beetle produced | |
| Tomb of King Tut discovered | |
| Scientists split the atom | |
| 'Snow White and the Seven Dwarfs' released | |
| Route 66 established | |
| J. Edgar Hoover became Bureau of Investigation Dir. | |
| Adolf Hitler jailed after failed coup | |
| Neville Chamberlain became Prime Minister of the UK | |
| First commercial airplane flight over the Atlantic | |
| Hoover Dam completed | |
| Insulin discovered | |
| Henry Ford announced 40-hour work week | |
| League of Nations established | |
| Bonnie and Clyde killed by police | |
| Car radio introduced by Chevrolet | |
| Penicillin discovered | |
| 'Gone With the Wind' book published | |
| US officially got national anthem | |
| Solo flight of Amelia Earhart across the Atlantic | |
| BBC became a public corporation | |
| First commercial radio broadcast aired | |
| World's first practical helicopter | |
| 'Time' magazine founded | |
| First FIFA World Cup | |
| Pluto discovered | |
| Polygraph invented | |
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Quiz Updated Jun 13, 2017
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