Swahili in east africa and english in global commerce are examples of

lingua franca

Explanation:

Swahili in east africa and english in global commerce are examples of lingua franca.

A lingua franca which is also refer to as bridge language, common language or link language is a language which is adopted as a mode of communication between speakers or groups of people whose native language or dialet differs, and it is mostly a third language which is different from the speakers or groups native language.

A whole language which is a language widely spoken and recognize internationally by diverse people can be recognized as a lingua franca

The answer is lingua franca.

Explanation:

Lingua franca is considered a language or dialect that is used as a way to improve and to make communication possible between some groups of people who do not have the same dialect or native language. This is usually utilized when a third language that is different from the speakers' native languages is being used.

Lingua francs have developed throughout human history because of commercial, cultural, religious reasons, among others. Lingua francs were used as a way to exchange information between scientists from different nationalities.