Totally agree, was expecting #2 today. The great thing about this series (thanks QM) is that there is so much to be learned about countries with information in nuggets. Number of quizzes in this series could easily surpass the general knowledge quizzes and be even more useful.
i think also Cyprus qualifies for having a DMZ as its northern (and only) border: maybe northern (turkish) cyprus is not a recognized state, but a border does not need an international acknowledgement to be effective (and sure the division in two of the island of Cyprus IS effective)
May I suggest writing DMZ in full? This is a site in english, yes, but you have many many people for whom english is not their native tongue.
I myself have not heard of DMZ before (and my vocabulary is quite big, I usually know more words in english than native speakers.) It is not a word you come across in daily life, unless perhaps in a documentary about korea. Or a book about military terminology.
Mauritius should work for "African island country uninhabited until discovered by Portugal" - although it was discovered first by Arabs the first to make a settlement on the islands were the Portuguese.
Belarus doesn't mean "White Russia" but "White Ruthenia", a historic land of Kievan Rus, which consisted most of today's Belarus. Name "Russia" also originated from Ruthenia.
Weird that you'd go with Ruthenia when you have the Rus there. In any case, it would be "White Rus", but since Russia is, practically speaking, the modern form of Rus, then "White Russia" is quite adequate; certainly more than a very old name for the region which is actually a latinized exonym.
You missed the part where I said Ruthenia is an exonym of Rus. Meaning Rus is the original name; so no, Rus is not the slavic for Ruthenia, but Ruthenia is the latinization of Rus.
Having said all this - 9/20 :-(
I myself have not heard of DMZ before (and my vocabulary is quite big, I usually know more words in english than native speakers.) It is not a word you come across in daily life, unless perhaps in a documentary about korea. Or a book about military terminology.
https://en.wikipedia.org/wiki/Mauritius#Portuguese_Mauritius