* Different sign languages exist: There are hundreds of sign languages around the world, each with its own history and development.
* Recognition varies by country/region: Different countries and regions have different policies regarding the recognition and status of sign language. Some may have official recognition through legislation, while others may not.
* Evolution of recognition: The recognition of sign language has evolved over time. In many places, it's become increasingly accepted and supported in recent decades.
Instead of a single date, here's a better way to understand the situation:
* Early Recognition: Some countries like France officially recognized sign language in the 18th century.
* Growing Recognition: The 20th and 21st centuries saw increased recognition of sign language globally, with many countries establishing national sign language associations, passing legislation for sign language interpretation, and incorporating sign language into education systems.
* Ongoing Efforts: The fight for full recognition and equality for deaf communities and sign language continues in many parts of the world.
To learn more about the specific recognition of sign language in a particular country, you can search for information about that country's laws, policies, and organizations related to sign language.