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Nikolai Miliutin | 
April 15  
1755: Samuel Johnson’s Dictionary of the English Language is published.
1817:
 The first American school for the deaf opens at Hartford, Connecticut. 
Thomas Gallaudet is its principal, and Laurent Clerc its only teacher. 
It is through this school that French Sign is introduced into the New 
World, where it eventually morphs into American Sign Language.
1864:
 The Russian administration in Lithuania plans to introduce the Cyrillic
 alphabet. In a letter to the governor-general of Vilnius, statesman 
Nikolai Miliutin writes that “Our alphabet will finish what our sword 
has begun”.
1958:
 The European Community decides that all the official languages of the 
member states shall also be official languages of the Community.
1966:
 As one of the last institutions to surrender, the Swedish supreme court
 opts to no longer use plural forms of verbs, a feature which has been 
absent from spoken Swedish for centuries.