In Egypt they speak a dialect of Arabic.
The predominant world lingua franca is English.
The lingua franca of India and Pakistan is Urdu/Hindi.
The first lingua franca--seen from a European perspective--was Latin.
The lingua franca in South America is currently Spanish.
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.
The Lingua Franca status is a descriptive term, and not a fixed status. Lingua Francas cannot be preserved. They change with the times.
Currently, Europe's lingua franca is English. However, not so long ago, the lingua franca of Eastern Europe was Russian (and sometimes German, depending on the proximity of a country to Germany as opposed to Russia).