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| Brugge, Belguim | 
September 30
1920: In the wake of the First World War, Belgium abolishes the linguistic rights of its German-speaking minority. German regains its co-official status twelve years later.
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| Brugge, Belguim | 
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| Elizabeth Elstob | 

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| Noah Webster | 
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| Flag of the European Union | 
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| Palace of Europe in Strasbourg | 
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| Issyk-Kul, Kyrgyzstan | 
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| Antoine Meillet | 
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| Yang Huanyi | 
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| Willie Brown | 
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| Cardinal Mezzofanti | 
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| Dan Everett | 
| Henry Sweet | 
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| Franz Bopp | 
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| A Klingon | 
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| Peter Mark Roget | 
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| N. Chomsky | 
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| Chomsky’s Reflections on Language  | 
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| Grace Murray Hopper | 
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| Edward Sapir | 
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| The Magnetic Fields | 
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| Esquema
                      de la máquina diccionario de Troyanskii (1933)  | 
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| Browning, Montana | 
| Hans Conon von der Gabelentz | 
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| Charles E. Osgood | 
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| Randy LaPolla |