User blog comment:Zippertrain85/Dawnguard Conclusion/@comment-17114085-20140511164121/@comment-9062114-20140512041330

No, Skyrim was unified, just under Atmora, not as it's own independent state, that was what High King Harald did, and why he was considered the "High King" while the other heads of Skyrim, were not.

My point is, was Skyrim didn't have parts of it owned by other Provinces at this specific time period, sometimes I get dates confused though. :/

As I said before, there's nothing saying they weren't unified, they just were not their own country they were a part of Atmora.