December topics request

Not sure I'll post every day in December, but I'll give it a try. Let me know of any questions or topics you'd like me to address in comments!

Here's a bonus link about the language(s) spoken in the countries formerly part of Yugoslavia. Post-Yugoslav ‘Common Language’ Declaration Challenges Nationalism by Sven Milekic, relevant to the conversation I had in comments with asakiyume on her post about languages.