mostly english but there are a lot of langueges
There is no official language in the US. English is the language used for legal transactions.
There is technically no official language in the US, but english is by far the most widely used and is the closest thing to a national language the country has.
It's used in order for us and others to understand meanings and culture through language.
A Tahun 17 is not used for anything in the US. The word Tahun is used in Indonesian language and in Malayan but has no specific meaning for anything in the US.
Generally "second language" refers to a second language someone can speak, ie: My first language is English, my second language is Spanish. Also, it can be used to let people know that one particular language is NOT your first, or best known. ie: English as a second language. Meaning your most fluent language is German, or Spanish or French, but you are learning English. Might help to get a more thorough answer if you used a sentence as an example, let us know how "Second Language" is used.
the Navaho language was used as a code, I think by the US, in WW2
1: American Sign Language
english is the most commonly used language
US EnglishOfficial language is English
It means "rage" in US language.
No. No language was ever an official language of the US, not even English.
In the US over-all, the dominant language is English.