It always is a fight between having larger (and federal) countries/regions, and having smaller states. There needs to be a balance. Even with Norway, aren't you

It always is a fight between having larger (and federal) countries/regions, and having smaller states. There needs to be a balance. Even with Norway, aren't you in EEA and Schengen? In any case, the geographical boundaries of my state in India changed thrice within a span of ~70 years. And that happened peacefully. I can't imagine that happening without wars if the individual states are nation states.