If you wanted to explain why some countries seem more favorable toward European integration than others, what cleavage would be most important: North-South, East-West, rich-poor, or Catholic-Protestant? No doubt any difference matters, at least potentially, and many of these cleavages are overlapping. We could invent a few others as well related to linguistic families, kinship structures, or even physical geography. Nevertheless, it helps to tell the story if you can focus attention on whatever offers the best prospect of combining simplicity with coherence. By implication, you have to make a choice about what matters most.
The United Kingdom is going to leave the European Union (EU). The facts being created on the ground all point to that conclusion. Nevertheless, it is still worth pointing out that that a British exit from the EU (or ‘Brexit’) is a bad idea. There are many reasons Brexit is bad. The most important is that the campaign for leaving the EU rested on a fundamental misunderstanding of international trade.