What would the world (map) look like if every country had to merge with at least one other country and they got to choose?

Such a highly specialised hypothetical, my good Dr Aziz Dida, deserves the soundest of empirical enquiry.

Mercifully, we have for Europe an extremely sound and fairly reliable criterion to answer this question.

Yes, there’s some static caused by large ethnic minorities. Whatevs.

This is my magnificent rendering of Europe loosely based on this. Grey for countries that didn’t really fit. Enjoy the Eurovision Union.