The pillar of society was the middle class; there was a saying like that in the old age before the apocalypse. This saying, of course, changed in the new age.
The pillar of society was the yellow-zone.
The green-zone's cities like Althrea, while guaranteeing safety, could only be enjoyed by the privileged, or those who worked for the privileged. It wasn't large in the first place, and there would only be one city per green-zone, while the rest of the field was used for building resorts and premium farmland.
The yellow-zone, however, had multiple cities, towns, and industrial complexes. While it didn't have the level of security that the green-zone enjoyed, it was a place where most of the Federation's industries were located, so the government would never neglect its security.
