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English serves as the lingua franca in many international business settings.
The lingua franca of India and Pakistan is Urdu/Hindi.
A lingua franca is a common language that is used for communication between people of different languages and cultures.
Lingua Franca is not a country, nor it is it located in any specific countries.
The current lingua franca is English, but that may be set to change in the next few years.
The lingua franca for India and Pakistan is Hindi/Urdu--which are functionally the same language.