Great quiz! A couple of points: France is the answer to 2 questions; and would you also accept "Zambezi" and "Congo" and "United Arab Republic" without the leading The's?
What makes the Congo River fit but not other rivers? For example, the Amazon is the longest river in South America, so the Nile is a legitimate answer.
The Congo fits not because its the longest but because it drains the largest basin and unfortunately I cannot (or don't know how) to allow the answer to accept multiple choices without forcing people to enter both answers. If you know how to do so I'd be happy to edit.
Hi Ray, To accept multiple answers, go to Step 2- Answers, click on the answer, then click Edit Type-Ins, and add as many alternate answers as you want (as well as alternate answers, it's useful for setting up multiple spellings of the same answer) Cheers, Jeremy