Globalization and international trade were supposed to make us all better off. There would be adjustment costs along the way ... but in the long-run more trade would lift all boats. But that hasn’t happened.
The creation of the EU was a political solution to economic problems. It was sold to the voters as a solution to economic problems. It would make the economy better, the voters were told.
It didn't make things better. It didn't address the fundamental economic problems. It only opened a door to the increased consolidation and concentration of wealth.