Maybe Estonian
Iran
The most frequently used letter in the Finnish language would be the letter "A".
No, each of the Scandinavian countries has its own language, in Finland it is Finnish. The official languages in Finland are Finnish and Swedish, both of them and English are taught to everyone in schools (immigrants do not always have to study Swedish). In northern Finlands live populations of Sami people who have their own language which is officially recognized in Finland. The avarage finn is likely to understand basic English and most younger one are able to hold a decent conversation in English but not that many can do that in Swedish. Also, the other languages spoken in Fennoscandia are quite closely related and speakers of Swedish, Norwegian and Danish are able to understand each other quite a bit but Finnish is completely different and resembles Estonian.
As one of the sciences astronomy is most closely related to mathematics, physics and chemistry.
Sevol is not a word in Finnish. It is most likely that you have misheard a word or thought that parts of two different words were one word. This is quite common when hearing a language you don't understand.
It's most closely related to Estonian.Estonian, and Saami (Lapp)estonian
The language most closely related to English is Frisian, a language spoken in the Netherlands and Germany.
Estonian language have lots of similar words with a bit different meanings. estonian nisu = wheat finnish nisu = bun estonian piima = milk finnish piimä = sour milk
English is most closely related to the Germanic language family, specifically the West Germanic branch.
The language most closely related to Vietnamese is Muong, which is a language spoken by the Muong ethnic group in Vietnam. Both Vietnamese and Muong belong to the Vietic branch of the Austroasiatic language family.
I think the most expressive language is Hebrew or Finnish.
indo-european
Iran
The most frequently used letter in the Finnish language would be the letter "A".
The closest widely known language to Hungarian is Finnish, but still they are very far from each other nowadays. There more closely related languages to Hungarian (from the Ugric branch of Finno-Ugric languages, Finnish is in the Finno-[Permic] branch, of course), but those languages are highly unknown for most people also those languages are spoken by only a smaller group of people (at least compared to Hungarian and Finnish which means millions). Anyway, more closely related languages of Hungarian includes (for example): Mansi and Khanty.
Neither, it's a Ural-Altaic language more related to central and northern asian languages than most european ones, which are Indo-European
According to most references, 2/3 of the population primarily speaks Estonian and one-third primarily speaks Russian. Because of its location, many people speak both languages along with anish and German.