Why English as the Global Lingua Franca

In recent years, the term ‘English as a lingua franca’ (ELF) has emerged
as a way of referring to communication in English between speakers with
different first languages. Since roughly only one out of every four users of
English in the world is a native speaker of the language (Crystal 2003),
most ELF interactions take place among ‘non-native’ speakers of English.
Although this does not preclude the participation of English native
speakers in ELF interaction, what is distinctive about ELF is that, in most
cases, it is ‘a ‘contact language’ between persons who share neither a
common native tongue nor a common (national) culture, and for whom
English is the chosen foreign language of communication’ (Firth 1996:
240).