That reminded me something I was wondering.
What are Cultures and what are they used for?
Why is it called Cultures, that seems more like language/families?
There are also three linguistic sub-categories of Bulgarian language Official Bulgarian Language, The so called Macedonian (which is a dialect but whatever) and Banat Bulgarian Language. Banat Bulgarian is almost extinct. It is using Latin alphabet (similar to Croatian alphabet).
Basically, cultures are used when formatting and parsing data, and when sorting text. They can even be relevant for other text operations such as uppercasing or lowercasing.