If this is what I'm thinking then it's like Japan's history. Where Japan was basically run by feudal lords and their loyal clans. until Japan started to becomes westernized. It's affects where a civil war between the samurai fighting for the old ways and the new Japan military who were fighting for railroads and a new age that would disgrace the samurai's life style.
The climate east of the Cascades is markedly different, a continental climate of cold, snowy winters and warm, dry summers. ... Climate also affects growing seasons in the Columbia River Basin. At higher elevations, the season can last as few as 30 days.
