Alesia said:
Just because one region on the OTHER SIDE of the country is different doesn't ruin the lore.
As far as regional comparisons go, if we were comparing, say, India to Russia or maybe Mexico to Canada, it might be a reasonable assumption.
But that's not what's happening here.
Both the western region and the CW were born of the same established pre-war american society, so that eliminates any significant cultural or sociological differences.
Both were set in areas that were populated by multiple, heavily-metropolitan areas in relatively close proximity, so that eliminates any effects on culture that are directly related to general regional aspects.
The only real difference between the two regions is that the CW had access to vastly more pre-war information (i.e. the library, the museums, all the government buildings, etc.), while the west didn't, giving the CW a more favorable environment for cultural growth.
So, given that information, consider these two points:
1. The last vault opened in FO1, which took place 115 years prior to FO3.
2. The cultural state of the CW in FO3 is pretty much on par with that of FO1.
In other words, Bethesda expects us to believe that a culture ultimately born from a post-modern civilization that had developed much of the most advanced technology ever known to man, and has access to the most extensive collection of all-purpose knowledge still in existance, simply sat idle for 115+ years (the better part of 5 generations) and did ABOSLUTELY NOTHING to try to rebuild an orderly and interconnected human civilization... and then believe it with not even the slightest shred of an explaination as to why-- Sure, everyone can imagine all the reasons they want, but none of them matter if they're not in the game... "what if's" are irrelavent.
In short:
Players: "So, nothing in 115 years. Why not?"
FO3: "Because."
Players: "Lol. No, really, why not?"
FO3: "......."
Players: "[Call Shenanigans] Weaksauce, GTFO."
Meanwhile, the western region as a whole recovered as a civilization by leaps and bounds in nearly every aspect during that same timespan, successfully re-establishing widespread (i.e. covering territory equal in size to multiple states) commerce, humanitarian efforts, establishment of agriculture, and creating a centralized governmental body in order to create an orderly environment for greater prosperity as a society, the most recent events of which was seen in NV.