Basically the implementation of the Maastricht Treaty, when it went from European Economic Community to European Union.

EEU or economic euro union

the original name was Common Market then Euro Community

Bell_curve

I think it's in Norway's benefit to only have the economic agreements. I lived through the transition from Economic Union to Political Union in the EU, and honestly, it hasn't gotten better for the net payers. Brexit mess shows that you don't want to go in and then leave again - that's a self-own.