
In talking to a friend who travels to Argentina frequently, is fluent in Spanish and also uses Spanish on their Mac: So unfortunately Apple did not include the es_419 (Latin America) or es_AR (Argentina) locales, and they tied those up into the es_ES locale. When I enabled either, there was no change on the available locales on my system: $ locale -a | grep es Unfortunately Apple really did not create a locale for Argentina, so when you look at the Language & Region section in the OSX settings, the difference between Español (Spain) and Español (Latinoamérica) is really non-existent in OSX. First off, you already have asked this question here, and the Apple or Unix/Linux StackExchange pages are more appropriate for this question, however you put up bounty, and if nobody answers your question you don't get that bounty back, so I'll answer here and follow up with the same answer (if you find it formidable) on that other page.
