* Evolution, not invention: ASL evolved over time, influenced by sign languages brought to America by the Deaf community.
* No documented history: Early Deaf communities in America didn't leave extensive written records of their sign language use.
Here's what we *do* know:
* 18th century: Deaf schools were established in America, fostering a common sign language among their students. This laid the foundation for what we know as ASL today.
* 19th century: Thomas Hopkins Gallaudet, a key figure in Deaf education, recognized the importance of sign language and encouraged its use. He also brought back sign language knowledge from Europe.
* 1960s & 1970s: ASL gained recognition as a distinct language, separate from spoken English. This helped increase Deaf pride and acceptance of ASL.
In essence, ASL wasn't "invented" but rather developed organically over centuries through the Deaf community's use and evolution.