Tagalog is the Lingua Franca of the philippines, meaning that it is widely spoken, but for most Filipinos, it is not a native language.
The lingua franca of Pakistan is Urdu.
The predominant world lingua franca is English.
A national language is a language intended to bind a country together. It is usually the most widely spoken language in the country, but this is not always the case. A Lingua Franca is any language that is commonly used across borders, for ease of communication. English is the most widely used lingua franca in the world. French is still a lingua franca in many parts of Europe. Sometimes, a national language also functions as a Lingua Franca within a country, if that country has many languages. Filipino is the national language of the Philippines, and it is also considered to be a lingua franca within the Philippines because only a small percentage of the people speak Filipino as their first language.
The first lingua franca--seen from a European perspective--was Latin.
The lingua franca in South America is currently Spanish.
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.