A Montenegrin.
By naturalization or by marrying a Montenegrin citizen, but there is no birthright citizenship!
There are no volcanoes in Montenegro.
Because he is alien. Reptile. From center of Earth.
There is a mountain in montenegro called Komovi Mountain
The official name of Montenegro is Montenegro. It is also called Crna Gora. Crna Gora means black mountain in Montenegro.
There is no place called Serbia & Montenegro. Between 1998 and 2006 there was a country called Serbia & Montenegro but since 2006, when Montenegro declared independence, they have been 2 separate countries - Serbia and Montenegro. Postal codes depend on which city you are posting to.
Before the euro, Montenegro used German marks as its currency. In the last century, precisely in 1906, Montenegro had its own currency called Perper.
A citizen's army is called a militia
A citizen of France is called a French citizen of a Frenchman.
A citizen of New Hampshire is called a New Hampshirite.
A citizen of Ivory Coast is called an Ivorian.