Agriculture and the New California Republic.
Rivet city and a massive robot.
Shady sands was a haven of diversity, and had a more-than-healthy agriculture.
Shady sands turned into NCR, a selective Right-wing city.
Lost Hills is the BoS HQ, and a technological mainstay.
The Pentagon.
Adytum had scavs. which devoted their time to saluaging artifacts. It had the gun runners, who provided some of the best weapons in the region. It had Smitty, who made bullets. And it had the makings of its own agriculture, which included the cultivation of mushrooms.
NCR supposedly controls all of southern california.
It is not known what is the canon outcome of Vault Dweller's adventures in the Boneyard. The only available piece of information comes from the Vault Dweller's memoirs: I found many enemies, and a few friends, in the Boneyard. I killed when necessary and learned more about the nature of my true foes. It is not known for certain, however, whether he did uncover the assasination of Zimmerman's son by the Regulators and their attempt at putting their blame on the Blades, and whether he freed Adytum from Regulator rule. We don't even know if he killed the deathclaws, so it is entirely possible that Adytum joined the NCR under the control of Regulators, after the Vault Dweller was fooled into killing the Blades
The Hub was founded just 16 years after the war, and united all the different towns through trading their most prominent commodities, the Hub also had the water, and was a culmination of the strengths of the surrounding communities. It was also the first community to accept equality among humans and ghouls.
It was also crushed into oblivion by super mutants.
It had leaders like Tandi, Sherrif Greene and Killian Darkwater who refused to conceed civilisation to the barbarians.
Megaton, Rivet city, Cantebury commons, Big town are all cities that 'refused to conceed civilisation to the barbarians.'
It radiation count was also lower, with DC being a bigger target for the nukes.
The whole world was burned to a crisp with thousands of nukes. The radiation wouldn't differ much around the whole planet.
The west coast came on leaps and bounds in less than 2 centuries. The East coast is nothing compared.
The water in DC is now not irradiated. The BoS are also crushing the Enclave at the moment. There's no detail on whether the Enclave was wiped from the West coast with the destruction of the oil rig. Navarro base is still there.
The NCR, formerly shady sands, grew into a thriving territory consisting of 5 states. By the time of Fallout 2 it had a population of ~700,000.
I'll give you that one. Even if it is a bullying territory.