For hundreds of years, the kings of the west prospered with security and abundance, at the expense of others, at least. The masses have revolted and established themselves a stronghold in the east, holding much of the farmland under their control. The only leverage the western kings have at their disposal is the landscape that may make invasions quite difficult.
I designed the map with the purpose of the player being in the top left on the hill. It's still playable with a smaller AI such as Sultan/Rat/Snake (but he would have no moats).