Languages of India
Until the Twenty-first Amendment of the Constitution of India in 1967, the country recognised 14 official regional languages. The Eighth Schedule and the Seventy-First Amendment provided for the inclusion of Sindhi, Konkani, Meitei and Nepali, thereby increasing the number of official regional languages of India to 18. The Eighth Schedule of the Constitution of India, as of 1 December 2007, lists 22 languages, which are given in the table below together with the speaking population and the regions where they are used. 
The individual states, the borders of most of which are or were drawn on socio-linguistic lines, can legislate their own official languages, depending on their linguistic demographics. The official languages chosen reflect the predominant as well as politically significant languages spoken in that state. Certain states having a linguistically defined territory may have only the predominant language in that state as its official language, examples being Karnataka and Gujarat, which have Kannada and Gujarati as their sole official language respectively. Telangana, with a sizeable Urdu-speaking Muslim population, has two languages, Telugu and Urdu, as its official languages.
Multiculturalism
Religiously, Hindus form the majority, followed by Muslims. The statistics are: Hindu (80.5%), Muslim (13.4%), Christian (2.3%), Sikh (2.1%), Buddhist, Bahá'í, Jain, Jew and Parsi populations. Linguistically, the two main language families in India are Indo-Aryan (a branch of Indo-European) and Dravidian. In India's northeast, people speaking Sino-Tibetan group of languages such as Meitei (Meitei-lon) recognized by the Indian constitution and Austroasiatic languages are commonly found. India (officially) follows a three-language policy. Hindi (spoken in the form of Hindustani) is the official federal language, English has the federal status of associate/subsidiary official language and each state has its own state official language (in the Hindi "sprachraum", this reduces to bilingualism). Further, India does not have any national language. The Republic of India's state boundaries are largely drawn based on linguistic groups; this decision led to the preservation and continuation of local ethno-linguistic sub-cultures, except for the Hindi "sprachraum" which is itself divided into many states. Thus, most states differ from one another in language, culture, cuisine, clothing, literary style, architecture, music and festivities.