I don't know if your essay can cover the international linguistic sphere Oldspice; but the current language situation Singapore is a very interesting case to study.
The official business language is English but it's being "tainted" and converted into what linguists are terming 'Singlish'.
There's a big debate as to whether this is lower class and if it should be allowed. At present a lot of Singaporeans are unhappy as the Singapore business industry (especially within teaching) is hiring international employees with a 'proper' accent and paying big bucks whilst the Singaporeans, virtually all of whom speak perfectly fluent English, are being neglected.