ろう教育
Deaf education in the United States began during the early 1800s, when the Cobbs School (an oral school) was established by William Bolling and John Braidwood and the Connecticut Asylum for the Deaf and Dumb (a manual school) was established by Thomas Hopkins Gallaudet and Laurent Clerc. When the Cobbs School closed in 1816, the manual method (which used American Sign Language) became common in deaf schools for most of the rest of the century. During the late 1800s schools began using the oral method, which only allowed the use of speech (in contrast to the manual method previously in place). The oral method was used for many years, until sign-language instruction gradually returned to deaf education.