How a new civilisation rise out of ruin of the old world
Fallout. The nuclear war wiped out any semblance of governance from the face of Earth. Before the bombs struck government around the globe managed to send their most important people to the Shelters, but those who left in the surface has to face the wrath of nuclear explosion and all that follows.
Earth's ecosystem was broken with the release of so many radioactive elements. To put it simply, Earth is now a planet of garbages and the challenges humanity faced was to live amongst the garbages left by the old world and its destruction.
That was the main theme of the Post-Fallout Era: Garbages. To make a living amongst the garbages: to scavenge, to reuse, recycle and repurpose the garbages. As humanity adapted to this living amongst garbage lifestyle, the clever and ambitious ones discovered the new rule of governance: since the planet and the land itself are garbages, only those who can repurpose the land to give continuous sustenance can be certain of their future. Not even robbing the repurposed land can give you continuous sustenance, only those who has mastered the art of running the ecosystem and keep it can. Thus born the Nature's Servants.
Then come out the Blueskins. Those who come out from the Shelters retain many of the knowledge of the old world. And the crown of the knowledge to conquer the Fallout World is one from Project Atlas: The Harmony Concept. Also called Zero Garbage Concept, the idea was to live in harmony with the ecosystem with everything produced from human activities support the ecosytem, nothing that will hinder the way of the nature. No Garbage. Everything produced return to nature to be processed by the ecosytem. The Harmony Concept extend it further: to return all garbage to be processable by the ecosystem.
When the Blueskins come out of their Shelter underground they found the surface as the world of garbage (radioactive included). And they convert pieces of nuclear wasteland into their own dominions where a running ecosystem return the old world and the nature. And comes a new rule of governance: only those who convert the wasteland into ecosystemic lands and keep it running can rule them.
Feudalism is back.
Fallout Feudalism is simple enough, only those who convert the wasteland and keep its ecosystem running own the land. Taking somebody's land as your own is useless if you can't keep the ecosystem running, and other druids will treat you with more than simple hostility. They make it their mission to return the earth to nature's embrace ( a running ecosystem) and someone who take away a dominion (wasteland converted into livable ecosystem) is more than just a robber, they goes against druidic principle and worse, wreck the ecosystem and turn the dominions into wasteland again.
Druids only recognised those who inherited the land from their ancestors and those who converted the wasteland as the legitimate ruler of the land. And they're either druids or has druids for subordinate to keep the harmony, so druids form the ruling class.
And 1000 years has passed.
The story goes in the frontier where the MC told the druid shopkeeper about his experience with the nobility from the neighborhood dominion. Shopkeeper tells about how druids originally started with the mentality of scavenging, garbage collecting, garbage recycling and garbage repurposing mentality, and how they still teach the conduct in the Druids Academy,
Shopkeeper tell MC that druids will treat you with hostility if you depose of the rightfull ruler, that there are rules and penalty to be taken by rulers to better the live of their people, although he admitted that it's not as effective in the frontier.
Shopkeeper tell MC about the martial art of the Heavenly Net Monastery. And their library and the choices in the lecture MC can take there (a little more than highschool grade, geared more toward the practical but the most important was that graduates can go to university).
MC finally accept.