when was sign language invented
The Sign Language was invented in 1620 when the first book was published by Juan Pablo de Bonet to teach sign language to the deaf. Bonet published the book on the basis of an Italian physician Girolamo Cardanoâs works that learning can be acquired without hearing.he Sign Language was invented in 1620 when the first book was published by Juan Pablo de Bonet to teach sign language to the deaf. Bonet published the book on the basis of an Italian physician Girolamo Cardanoâs works that learning can be acquired without hearing.