Sudan and South Sudan have multiple regional
sign languages, which are not mutually intelligible. A survey of just three states found 150 sign languages, though this number included instances of home sign. By 2009, the Sudanese National Union of the Deaf had worked out a Unified Sudanese Sign Language, but it had not yet been widely disseminated.
References [ edit ]
Sign languages by region
Plains Sign Talk Canada:
American, Blackfoot, Maritime, Quebec, Inuit, Plateau Mexico:
Mayan, Mexican United States:
American ( Black American), Blackfoot, Navajo, , Martha's Vineyard , Plateau , Sandy River Valley Henniker
American Sign Language
Extinct sign languages
Sign-language names reflect the region of origin. Natural sign languages are not related to the spoken language used in the same region. For example, French Sign Language originated in France, but is not related to French.