Needs more time, I couldn't manage it on the first go but I can ace the countries of the world quiz in 8 minutes. I'm curious however on Australia, USA the UK? surely they are English speaking countries?
I know that the USA has no official language, but is that also true for the UK? Kind of funny, if so, that the UK wouldn't have English as the official language yet Ireland would. And so would most of the countries that were formerly British colonies which is what the majority of this list is. (plus a couple, like the Philippines, that were formerly American territories, and then a couple odd one-offs)