EU:
https://en.wikipedia.org/wiki/Member_state_of_the_European_Union#List
Europe:
https://en.wikipedia.org/wiki/List_of_sovereign_states_and_dependent_territories_in_Europe
There are exceptions like I would rather support Swiss or Norway better than something like Portugal(example), but I wouldn't watch these games anyways and this is just example that for me some regions are more important than others.