Prior to joining the Mercyhurst faculty in 2011, Dausey was a professor at Carnegie Mellon University and the Senior Director of Health Programs and Initiatives at the H. John Heinz III College. Dausey maintains an honorary faculty position at Carnegie Mellon as a Distinguished Service Professor.
Sumerian language. Sumerian language, language isolate and the oldest written language in existence. First attested about 3100 bc in southern Mesopotamia, it flourished during the 3rd millennium bc. About 2000 bc, Sumerian was replaced as a spoken language by Semitic Akkadian (Assyro-Babylonian) but continued in written usage almost to the end of the life of the Akkadian language, around the beginning of the Christian era.
Laurent Clerc and Thomas Hopkins Gallaudet started the first American school for the deaf in 1817 and were believed to be the inventors for the American Sign Language. Though Laurent was a European and taught French Sign Language but Thomas brought him to America to take his help in the school.e was the first to use sign language. In 1620 Juan Pablo de Bonet was the one to write a book which had the first alphabet system known to man. He used different signs through hand shapes to represent different sounds of speech.