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Due to intermarriage in the original community of English settlers of the 1690s, and the recessive خلينا هنا احمد سعد كلمات اغنية مكتوبة nature of genetic deafness, Chilmark had a high 4% rate of genetic deafness.  MVSL was used even by hearing residents whenever a deaf person was present,  and also in some situations where spoken language would be ineffective or inappropriate, such as during church sermons or between boats at sea.

 

ASL is thought to have originated in the American School for the Deaf (ASD), founded in Hartford, Connecticut, in 1817.  Originally known as The American Asylum, At Hartford, For The Education And Instruction Of The Deaf And Dumb, the school was founded by the Yale graduate and divinity student Thomas Hopkins Gallaudet. Gallaudet, inspired by his success in demonstrating the learning abilities of a young deaf girl Alice Cogswell, traveled to Europe in order to learn deaf pedagogy from European institutions.

 

Ultimately, Gallaudet chose to adopt the methods of the French Institut National de Jeunes Sourds de Paris, and convinced Laurent Clerc, an assistant to the school's founder Charles-Michel de l'Épée, to accompany him back to the United States. Upon his return, Gallaudet founded the ASD on April 15, 1817.

 

More schools for the deaf were founded after ASD, and knowledge of ASL spread to those schools.  In addition, the rise of Deaf community organizations bolstered the continued use of ASL. 

 

Societies such as the National Association of the Deaf and the National Fraternal Society of the Deaf held national conventions that attracted signers from across the country.  All of that contributed to ASL's wide use over a large geographical area, atypical of a sign language.