Great example. Another one is state governments joining a union or federal system, such as US states joining the Union or European states joining the EU, and becoming bound by federal/EU law.
That's an interesting way to look at it; governments merging into even larger entities is them giving up power?
The "government" isn't a unified mind. It's a group of individuals looking to further their career and (rarely) pursue a cause they care about. If two governments merge their law-sets into one, they aren't losing anything - the people involved are simply being promoted and gaining a broader peer influence with more vertical growth opportunities.
Or lets the local government or whatever party say "ohhh how wouldn't we have increased your well-being if not for them darn Europeans so just elect us one more time then we'll show them for good". And this line works so well, regardless if the respective party did or tried anything on the European level or not. It's the cultivated helplessness in some circles, that EU was some remote and abstract place where "things" happen and no one, not even your own representatives there, can move an inch. Same whether you're German or Luxembourgeois, it's the ideal material for promoting your own party and keeping the voters dumbed down.
> In the South, do they generally consider themselves as forced to re-join the Union, rather than having been forcefully prevented from leaving?
I don't think it is revisionism and maybe I am wrong on this, but wasn't it the Confederacy who attacked the Union at Fort Sumter which kicked off the US Civil War?
It's my understanding the Union was more or less ambivalent to the Confederacy and figured they'd let things lie then the Confederacy attacked.
I don't know enough history to say whether the Confederacy was forced to re-join or whether the states asked to rejoin in light of their government collapsing (Davis fleeing Richmond, etc). My guess would be that it was more of a failed state situation where the US had dibs on propping it back up.
The "government" isn't a unified mind. It's a group of individuals looking to further their career and (rarely) pursue a cause they care about. If two governments merge their law-sets into one, they aren't losing anything - the people involved are simply being promoted and gaining a broader peer influence with more vertical growth opportunities.