This May Day will usher in the largest expansion of the EU to date. 10 countries will be joining the existing 15 to create a bloc of 25 with a total population of 455 million. The BBC has a good overview of the new countries as well as information about the old members and the second wave of former Soviet bloc countries that are waiting in the wings. The EU faces a lot of challenges but this is the most significant political development in Europe since the fall of the wall. Old enemies are coming together politically (eventually, it is hoped!), economically (a part of northwestern Germany has become a bedroom community for Dutch seeking affordable housing), and socially with many younger people migrating to look for work. Is it going to work?