Explain some exceptions.

[AhoyLemon]

The best use case I can think of is in countries in europe, where SCOTLAND and ENGLAND are not options, but UNITED KINGDOM is.

maybe a new feature in the categories that looks something like....

possible: [
  "UNITED KINGDOM",
],
impossible: [
  { pw: "ENGLAND", reason: "In a global definition, ENGLAND is not a country." },
  { pw: "SCOTLAND", reason: "In a global definition, SCOTLAND is not a country." },
]

Also, maybe research this UK thing more, because it's confusing.