Thune is the wealthiest State on Frostorm due to its control over the majority of the raw resources of the island. Overland Thune is mostly forest, filled with very large trees and large animals. The real resources of Thune however, are underground. With control over the majority of the Frostkeep Mountains, Thune mines the raw resources used by the rest of the nation.
Thune's population is weighted towards races that are comfortable spending a large portion of their time underground, as most of the cities, including Thuneseat, are underground.