The Central Tension of the campaign is Civilization vs Nature. Law vs Chaos. Chaotic races will be tied to ruins and the outdoors. The land itself will be trying to break free of the civilization. Evolve, grow. Be unchained.
Law is trying to maintain the status quo. There are weakened civilizations trying to hold onto the territory they have, and push back the chaotic races and areas. Trying to maintain wards that are holding back forces of evil (and change).