Iceland is considered unilingual as the vast majority of the population speaks Icelandic as their primary language.
It shouldn't.
The word itself means one tongue (language). If you only speak English, you are unilingual. If you speak two, you are bilingual and if you speak several, you are multilingual.
No. France has a relatively unilingual society compared to most other European countries. Many people in France speak English and German, but these languages aren't required to get by.
Probably Saskatchewan or Manitoba.
There are probably several in the world, but these countries come to mind: Austria North Korea South Korea
There very few monolingual countries. Please add to this list:KuwaitNorth KoreaSouth Korea
Austria
No in the UK English, Welsh and Gaelic are all used.
monolingual or unilingual
I believe that word is, "unilingual", which literally means, "One tongue".
Strictly speaking, just about every country in Europe has minorities that do not use the national language much (or at all) in everyday life. Traditionally, these European countries have been seen as close to being unilingual: * The Netherlands * Norway * Sweden * Denmark (despite a small German speaking minority in South Slesvig) * Iceland