the border is not so well defined from what I understand, but according to most of what I had read, the border between Zambia and Botswana runs for a few 10's-100's of meters precluding a border between Zim and Namibia. Shame about Nkomo, the bird was a judgement call, I didn't know if it would make it too easy, and most people that I know call it the Zim Bird (we never refer to it as just a bird). I don't think I want to meet such special people ;) Thanks for the comments
Definitely more difficult than the featured quiz. Regarding the yes/no questions: if you get one you automatically get the other, maybe consider rephrasing one of them? Also, the spelling is "independence".