The bigger question in my mind is how much geography matters inside one country. For comparison's sake, I think the point of the article works even better to compare a woman in America to a woman in Saudi Arabia. On the other hand, it's a bit apples and oranges -- the kingdom explicitly disallows women to do many things without a man, whereas if there are effects like that in America still, they're definitely much more subtle than being enacted in law. So how does the apples to apples comparison work out? Does geography play nearly as large a role in a country? Does it play as large a role in a smaller, more homogenous country (Sweden, say) than in America?