Ability to know language?

[Kouvostoliitto]

I got an idea. Ability to know the language. I think there are 4 cultures with different languages ​​in the area: merchants, Sámi, Finns, and Njerpez. Everyone knows sign language, but to have better contact would it be good to know a foreign language?

[McKwack]

I would have thought that everyone in the game simply speaks Finnish (translated to English for the convenience of us players). CMIIW?