The national language of Croatia is Croatian, also often called Serbo-Croatian. The Croatian name for the language is "Hrvatski". French is not a commonly-spoken language in Croatia.
Yes, although Slovenian is a bit different.
I don't know, which country speaks american...-_-'
German (or Deutsch) is the national language of Germany. It is also spoken in Switzerland, and dialects of it are spoken in Austria. Incidentally, there are towns in the Patagonia region of Argentina where the German language is primarily spoken.
Dinkland speaks dink
Croatian.
Switzerland is a country that speaks both German and French.
There is no country that speaks "ONLY" Russian; however, the largest Russian speaking country is Russia.
Italy speaks the most Italian, as it is the official language of the country.
English,Spanish,Croatian,French
This is kept a secret for comedic effect, just like the location of Springfield in the Simpsons.
Dinkland speaks dink it is right next to england