Answer:
Signing the law that established Gallaudet University.
Explanation:
Thomas Hopkins Gallaudet was the man who opened the first American school for the deaf. He was helped by his fellow activist, a French man, Laurent Clerc, who taught him the sign language and later became the first deaf teacher in the United States. Gallaudet's son, Edward, continued fighting for his father's beliefs, and it was in 1864 that Lincoln signed the charter enabling the foundation of a national college for deaf students, named after Thomas Hopkins Gallaudet.
