There is no universal sign language. Different sign languages are used in different countries or regions. For example, British Sign Language (BSL) is a different language from ASL, and Americans who know ASL may not understand BSL. Some countries adopt features of ASL in their sign languages.

What is the most universal sign language?

Probably the most-used sign language in the world (but there is currently no data to confirm this), Chinese Sign Language uses the hands to make visual representations of written Chinese characters. The language has been developing since the 1950s.

How many versions of sign language are there?

There are more than 300 different sign languages in use around the world. They vary from nation to nation. Even in countries where the same language is spoken, sign language can have many different regional accents that bring subtle variations to people's use and understanding of signs.