Custom language that displays content from two languages This is a rehashing of a question I asked previously, but maybe asked the wrong way.

I have a multilingual Drupal 7 site - there are 13 different languages and those sites all have unique translated content on them.

However, there are an additional 5 "languages" we need to account for - an example of this would be Australia. Australia speaks English so we'd like it to display English content, but there is also content that is unique to Australia (which can't display on the English site), so that should be displayed on the Australian site as well.

I'm curious if we can define a custom language (Australia) that can display multiple types of language content (English and Australian).

For example:

Australian Website


Home (English)
About (English)
Products (English)


Product One (English)
Product Two (English)
Product Three (Australian)
Product Four (Australian)

Resources (English)
Contact (English)


Hopefully this makes sense. Any insight is appreciated.
The whole idea of linking language with country falls apart when you consider countries like Canada. You could separate language and applicable country since they're not really the same thing. In your example:

Australian Website


Home (Lang: English - Country: UK, US, Canada, Australia)
About (Lang: English - Country: UK, US, Canada, Australia)
Products (Lang: English - Country: UK, US, Canada, Australia)


Product One (Lang: English - Country: UK, US, Canada, Australia)
Product Two (Lang: English - Country: UK, US, Canada, Australia)
Product Three (Lang: English - Country: Australia)
Product Four (Lang: English - Country: Australia)

Resources (Lang: English - Country: UK, US, Canada, Australia)
Contact (Lang: English - Country: UK, US, Canada, Australia)