Languages with official status in India
The Indian constitution, in 1950, declared Hindi in Devanagari script to be the official language of the union. Unless Parliament decided otherwise, the use of English for official purposes was to cease 15 years after the constitution came into effect, i.e., on 26 January 1965. The prospect of the changeover, however, led to much alarm in the non Hindi-speaking areas of India, especially Dravidian-speaking states whose languages were not related to Hindi at all. As a result, Parliament enacted the ,
Language secessionism
The national language of Pakistan and official languages in many parts of India, the Khariboli dialect has become the chief language variety for use in Hindi and Urdu. Grammatically, Hindi and Urdu are the same but differ in their lexicons. Hindi tends to revitalize its Sanskrit words and purges words borrowed from Persian and Arabic while Urdu does the opposite. In essence, apart from their scripts, the lexicon is what distinguishes Urdu and Hindi. Also, there are other Indo-Aryan languages that are classed as Hindi but are not necessarily the same as Hindi and Urdu. Their dialects are close to the Khariboli dialect, which sets the grammatical standard over other Indo-Aryan languages both far and near. These languages will tend to diverge, especially through the influence and accents of surrounding native languages in the communities.