Sign language predates Annie Sullivan by centuries. There are many different sign languages around the world, each with its own history and development.
Annie Sullivan was a teacher who used sign language to help Helen Keller learn to communicate. She was a skilled teacher and used existing methods of sign language to help Helen overcome her disabilities.
Here's a breakdown:
* Sign language is a complex system of communication: It has its own grammar, vocabulary, and structure.
* Annie Sullivan was a teacher: She used existing sign language techniques to help Helen Keller learn to communicate.
* Sign language has been used for centuries: It is not a recent invention.
It is important to understand the history of sign language and to recognize the importance of its role in communication for the deaf and hard of hearing communities.