Some of these are quite surprising (or astounding). Like the densest road netwerk, it makes sense, but still only beaten by belgium and minute states. Also the GDP, only beaten by two. The density is sort of one, but it is a well known fact, so not so surprising anymore.
I didnt know china reaclaimed that much land from the sea, had no idea about that one.
PS thanx for accepting copenhagen for denmark :) (ofcourse I would ve tried denmark immediately afterwards, but I had typed copenhagen before I knew it, and it would ve cost me time otherwise)
But well, with most of these things it is pick a source and stick with it. (often one study shows one thing and another something else, especially on things like how religious is a country, if the answers are selfreported, how they interpret "how important is religion to you" varies enormously..)
and apparently, someone has just taken the challenge and created the quiz tallest people ;)