When I was regularly doing business in PDX, one of the things that struck me was how few people had any idea that there was any part of the state east of Bend. You'd be having this conversation and it turned into some kind of parody or comedy sketch where people really seemed to believe that the earth just sort of ended at The Dalles. I mean that's really far east!!!!.
I recall talking to one guy who was a tech exec that had lived in PDX for decades and I tried to describe where I lived, IE: just get on I-84 and keep going east... you would have thought I was an alien, as he clearly had no idea there was anything on I-84 east of Troutdale.
And that's the gap here... two culturally, economically, completely different peoples. She flies with her own wings...
Itβs worth noting that West Virginia chose to reject slavery and remain with the Union while the more wealthy slaveowning portion of the state seceded. A proud origin for the West Virginians!
Pretty badass.
As for the Dakotas & Carolinas, those both entered the US as separate states AFAIK, rather than separating after they were in the US.
Disclosure: I have no clue about the underlying political/"cultural" differences of Idaho in contrast to the rest of the states...or Florida for this matter.
In practice, though, would the 49 remaining states invade Idaho & force them back in? The middle of the state is pretty wild & mountainous.
I mean West Virginia decided to leave Best Virginia, and we have N and S Dakotas and Carolinas.