In the Stormlight Archive series, Kharbranth is a city-state independent from the bordering Frostlands. I've read the first book and don't recall anything being mentioned about its history with the Frostlands.
Here's my question: Is it known at this point how it gained its independence from the Frostlands? It is small enough on the map in the edition of the book that I read that it appears to just be a city at the edge of the other country. Does it have a strong army and Vorin nationalist identity that led to a war a long time ago, or was it always just a separate place?
Remember to tag spoilers :)