Male, Asia
If you mean Dhivehi, it is the official language of the Maldives.
Divehi (or Dhivehi) is the official language of Maledives, a large group of islands in the Indic Ocean, not so far from the South of India, there existing an island in this country where it´s also spoken as an Indo-Aryan language, but as in Maledives also having some mixing with importantly Sinhala (from India), Arabic (from ancient merchants travelling there around), plus Persian (from new business groups after the "Great Discoveries"...), Portuguese (from pirates or so-called navigators-colonisers), French and English (both, idem) as well.
Any city in a Dutch-speaking country would speak Dutch to you, unless they knew you couldn't speak Dutch.
Turkey
That would be here in Canada.
In Germany, people speak German.
In countries where they speak French, like France for one.
England was the first country
in which country do people speak mein?
Mandarin is mainly spoken in China. It is also one of the official languages in Taiwan and Singapore.
Under any circumstance in which it is necessary for one person to speak on behalf of the entire country, it would be the head of government who does so. If the country you mean is the US, then the head of government is the President.