No. The Russian people primarily speak Russian, and Germans primarily speak German.
English and German are both Germanic languages. They have the same root origins.
Primarily Yes. High German (which is the German spoken in Germany) is the official language of Austria. Nearly all Austrians can speak High German, but a minority in the more rural, mountainous areas speak local dialects of German that are quite different from High German. Some Germans find these dialects of German difficult or impossible to understand.
no athen and sparta did not speak the same language because of different culters
It means that you speak in the same language
Basically the same reason as you speak your language.
The same language I speak in any location.
You speak the same language you spoke at the beginning of World War I.
yes. austria,swizzerland, and Germany all speak the same language
For the same reason you speak English. That's their language. (However English is not your native language, I think)
Each person would speak the same language. Same can be said about any language.
Not necessarily. A language family can have dozens of different languages in it.
it's the same way as any other language. How people speak English or Spanish or any other language..?