The first formal sign language, known as French Sign Language (LSF), originated in France in the 18th century.

There are approximately 2,000 sign languages in use around the world, each with its own unique grammar, vocabulary, and cultural context.

American Sign Language (ASL) is the most widely used sign language globally, with an estimated 500,000 to 2 million users in the United States and Canada.

Sign language is the primary mode of communication within the Deaf community, allowing individuals to express themselves and engage in conversations.

The terms 'Deaf culture', 'Deaf identity', and 'Deaf community' are all used to describe the shared linguistic, cultural, and social experiences of Deaf individuals.

The International Day of the Deaf is observed annually on September 23rd to promote awareness and understanding of Deaf culture and rights.

Deaf advocacy organizations work towards promoting equal access to education, advocating for employment opportunities, fighting for language rights, and addressing various other issues affecting the Deaf community.

Video Relay Service (VRS) allows Deaf individuals to communicate with hearing individuals over the phone using sign language and a video interpreter.

Interpreting involves translating spoken language into sign language and vice versa, facilitating communication between Deaf and hearing individuals.

There is no single sign language used in the majority of countries in Africa. Each country typically has its own unique sign language or multiple sign languages.

Simultaneous communication involves using spoken language and sign language simultaneously, allowing Deaf and hearing individuals to communicate more effectively.

There is no single sign language used in the majority of countries in Asia. Each country typically has its own unique sign language or multiple sign languages.

Interpreting involves translating sign language into spoken language and vice versa, facilitating communication between Deaf and hearing individuals.

There is no single sign language used in the majority of countries in Europe. Each country typically has its own unique sign language or multiple sign languages.

The term 'Deaf' is used to describe individuals who are deaf from birth or have profound hearing loss before acquiring language.