Sweden was the first country to officially recognize Sign Language as a language in 1981.

It is estimated that around 70 million people worldwide use Sign Language as their primary means of communication.

The World Federation of the Deaf (WFD) is an international non-governmental organization that promotes the rights of Deaf people and the recognition of Sign Languages.

The International Day of Sign Languages is observed on September 23rd every year to raise awareness about Sign Languages and promote their recognition.

Nicaragua has the highest percentage of Deaf people who use Sign Language as their primary language, with an estimated 98% of the Deaf population using it.

Interpreting is the process of translating spoken language into Sign Language and vice versa, allowing communication between Deaf and hearing individuals.

South Africa was the first country to recognize Sign Language as an official language at the national level in 1994.

The Convention on the Rights of Persons with Disabilities (CRPD) is an international treaty that promotes the rights of persons with disabilities, including Deaf people and Sign Language users.

India has the largest Deaf population in the world, with an estimated 18 million Deaf people.

Deaf is the term used to describe a person who is Deaf from birth or early childhood and has no functional hearing.

Nigeria has the highest number of Sign Languages, with over 250 distinct Sign Languages used by different Deaf communities.

Hard of Hearing is the term used to describe a person who is Deaf but has some residual hearing.

The United States was the first country to establish a national Sign Language interpreter training program in 1965.

Late-Deafened is the term used to describe a person who becomes Deaf later in life, usually after acquiring spoken language.

The United States has the lowest percentage of Deaf people who use Sign Language as their primary language, with only about 10% of the Deaf population using it.