[@Priscilla]

Where they last led off,

Conquerors were situated in California. And, by now would most likely have about half of the geographical US.

The Imperium of man was situated in New York, and would most likely have the same, about half of the Geographical US. (Assumptions, of course.)

The outliners themselves never really held any land. Rather, they were situated within the Ethereals ships, and a shadow dimension created to hide both in and out of the territory of the other factions. At one point they did have Conablum labs as a base, but, considering betrayal, they obviously don't have that anymore

Furthermore, aside from small Colonies or outposts for expeditionary reasons, I assume the rest of Arcadia would be a no mans land. Cities would still be smoldering, the wilds would be filled with creatures from all sorts of universes that leaked in, all in all rather dangerous. 

Except sweden. Sweden became Kolonland. As the Kolons multiplied, they became too much to handle, and so all three factions collectively dumped all but the twelve original Kolons there with Blueprints, metals, and shovels and let them do their thing. 

Their thing being, explosions. Explosions, all the time.