Why are Nordic/Scandinavian countries grouped with EU East ?

just curious, all of the players i know from the region play on west but even more than that, i find my ping is slightly better on EUW (im located in denmark) I just remember it feeling like a bit of a silly noob trap, as I originally created this account on EUNE (because of the "nordic" tag) and then shortly thereafter paid to transfer to west. is it just a matter of server population management? is it because "nordic" includes finland and some other east eu countries? any other nordic/scandinavian players out there wonder this as well? is this also the case with swedes and norwegians?
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