HN titles aren't allowed to deviate, even if the title lacks context, poorly done, or misleading. Also HN is primarily a US thing based on user base.
HN titles can deviate, but you should be careful with the deviations. In this case something like Nationwide (USA) probably would've been fine. Make a post after the submission so that dang and other mods/admins can see your rationale for your change if you're particularly concerned. Worst case, they change it back on you.