>Why not abolish nations within the EU and just become the EU with different provinces?
Because outside of your bubble nobody wants this. A random person from Bulgaria is going to have a very different culture from a random person from Netherlands. What do you think happens with power in such conglomerate ?
If you want to see what happens when you create a forced conglomerate of different nations (but still more similar than EU member, languages were way closer and cultures were close as well) into a super state look up Yugoslavia.
Because outside of your bubble nobody wants this. A random person from Bulgaria is going to have a very different culture from a random person from Netherlands. What do you think happens with power in such conglomerate ?
If you want to see what happens when you create a forced conglomerate of different nations (but still more similar than EU member, languages were way closer and cultures were close as well) into a super state look up Yugoslavia.