It appears that you are correct. When I did the quiz myself I thought it was weird that Belgium wasn't on there. I just have forgotten it. But surprisingly there's only one in all of Belgium; Brussels has over one million people but only one Subway. There are places here in Australia with more than one Subway and only 30-40,000 people.
Anyway I've added it. Thanks for pointing that out.
Anyway I've added it. Thanks for pointing that out.