Ok. Jaja. When I finished and saw that Africans had the longest (and Asians the shortest) I started to think what it was about, but didnt really believe it...
For some reason it was very much easier to find out the shortest. Only missed one country. The longest had more geographical variation, thus harder (the quiz answers!).
I noticed the same thing. On the longest side you have several African countries, several Latin American countries, and then a random one-off in Europe and another in the Arab world. Shortest are all clustered around the same geographic center.
I have a Lebanese friend who once, having seen the source behind this quiz before, kept arguing with a Sudanese mutual friend about which of their respective populations boasted a bigger cane. It was funny on its own, especially when everyone watching took sides with the Sudanese guy. Then suddenly the lebanese guy showed us the list. The reaction was priceless...it became one of those stories that we like to bring up at parties, especially when the Sudanese guy is invited xD