Worked example: all the stuff the UK just opted the fuck out of
Also, the US is a nation-state that devolves a lot of legislative ability down to the constituent states. The EU is more of a club with a shitload of rules, which, if you don't like them, you can just leave.
The most notable defining characteristic here is that the US can declare war on another nation, whilst the EU cannot.
There are some more woolly differences, like the lack of a standard language, or power socket, or overarching shared identity.
Also, the US is a nation-state that devolves a lot of legislative ability down to the constituent states. The EU is more of a club with a shitload of rules, which, if you don't like them, you can just leave.
The most notable defining characteristic here is that the US can declare war on another nation, whilst the EU cannot.
There are some more woolly differences, like the lack of a standard language, or power socket, or overarching shared identity.