I'm thinking we should place these in some other namespace than `enums`. The fact that they're enums doesn't warrant a namespace of their own, I think. However, they do have a functional grouping, in that they apply to "worldly things" - as opposed to, say, a base64 encoder. So (IMHO) they do belong together, but with some other name than `enums`.

Other name suggestions:
* internationalization
* globalization
* culture
* regionality
* nationality