Yes, Athens and Sparta both spoke the Greek language, but they had distinct dialects. The Athenians spoke Attic Greek, while the Spartans spoke Doric Greek.
It means that you speak in the same language
Welsh is spoken in Wales because it is the native language of the country, with a long history dating back over a thousand years. The Welsh language is an important part of Welsh identity and culture, and efforts have been made to preserve and promote its use.
The same language I speak in any location.
You speak the same language you spoke at the beginning of World War I.
Austrian German is a variation of the German language spoken in Austria. While they are very similar, there are differences in vocabulary, pronunciation, and grammar between the two.
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..?
It is unlikely that everyone in the world will ever speak the same language. Language diversity is a reflection of cultural diversity and is an important aspect of human society. While languages may change and evolve, the diversity of languages is a valuable part of our global heritage.
they do not speak the same because they are different tribes