Most believe that there are 6500 languages spoken in the world, while some believe that there are more than 7000
Answer:
<u>B.) collaboration between Gallaudet and Clerc</u>
Explanation:
Historical sources say that because the Braldwood's refused to share their sign language teaching methods, this led to a collaboration between Thomas Hopkins Gallaudet, an Ameican, and Laurent Clerc, a French man.
This collaboration led to the first permanent school for the deaf to be opened in the United States.