Thank you scambigol for the idea! Important note: the French territories all are listed under unofficial flags, (they don't have unique official flags, just the French flag). Also, Saint Martin is listed under the Dutch version of its flag, as yet again, the French side does not have a unique flag.
You must be given permission to copy featured quizzes of this kind and then modify them into a new quiz entirely. I'm afraid it is not possible to do so otherwise, as far as I know.