Controlling who has the vote has long been an issue, but denying political power to a region is a different category of thing than denying it to poor people etc.
Anyway, money is fungible you could say you’re helping Mississippi schools just as people in Mississippi schools are helping your local schools. Or you can think of it like the electric grid where money doesn’t get sent around the country just shifted left and right regionally which smooths things out.
Here is a list from English Wikipedia about the floods. The Dutch Wikipedia has much more info on the flood, as well as a museum in Leyden (from Rijkswaterstaat if I remember well). Not everyone can read the Dutch language. https://en.m.wikipedia.org/wiki/List_of_floods_in_the_Nether...
The problem is that the US isn't really trying, and there's a large movement that's actively trying to make the government worse. Fix that, and I think a lot of problems will disappear.
https://ind.nl/en/consequences-for-right-of-residence-when-a...
In the US you can generally establish residency in a different state in the amount of time it takes to get a USPS change of address notice and a billing statement of some sort showing that you’re able to receive mail there.
Yeah you can move wherever but you're not eligible for benefits, and the hiring managers want to know you speak fluent $LANGUAGE and have the right certifications from whatever credentialing system exists there.
Common currency and regulatory standards, but it's not like you're just moving from Spain to Poland, at least not without serious hurdles.
Look at all the process at BigCo vs the lean startup. Government also has to deal with all those tradeoffs inherent to people managing.
More likely, there are a benefits and costs to a large government. I doubt it's scale-free.