Vicky's quiz All First-Level Subdivisions of Europe on a Map is already challenging enough if you remove the lesser populated subdivisions! How many subdivions of Europe with more than half a million inhabitants can you name?
This quiz uses an alternative version of the subdivisions. They are not necessarily the official first-level subdivisions.
Thank you. I honestly just look on Wikipedia. For example, the 'States of Germany' article gives a list. Then I can sorted them on their populations and I could quickly see which ones had to be included.