History of Hindustani
Hindustani (Hindi: हिन्दुस्तानी, Urdu: ہندوستانی) is one of the predominant languages of South Asia, with federal status in the republics of India and Pakistan in its standardized forms of Hindi and Urdu respectively. It is widely spoken and understood as a second language in Nepal, Bangladesh, and the Persian Gulf and as such is considered a lingua franca in the northern Indian subcontinent.