Twenty-first_Amendment_of_the_Constitution_of_India
The Twenty-first Amendment of the Constitution of India, officially known as The Constitution (Twenty-first Amendment) Act, 1967, amended the Eighth Schedule to the Constitution so as to include Sindhi as one of the languages, thereby raising the total number of languages listed in the schedule to fifteen. The Eighth Schedule lists languages that the Government of India has the responsibility to develop.[1]
The Eighth Schedule to the Constitution originally included 14 languages.[2] The 71st Amendment, enacted in 1992, included three more languages, i.e. Konkani, Meitei (Manipuri) and Nepali. The 92nd Amendment, added Bodo, Dogri, Santhali and Maithali in 2003, raising the total number of languages to 22.