German President Frank-Walter Steinmeier has secribed the enlargement of the European Union by ten states 20 years ago as a “moment of European happiness.” On May 1, 2004 the EU grew from 15 to 25 members, and added 75 million new EU citizens, Steinmeier said at a joint press conference with Czech President Petr Pavel in Prague on Monday. “The enlargement of the European Union at that time is, I think, a very impressive example of a momentous and successful transformation in Europe, which finally overcame the division of Europe that resulted from the Cold War.” The EU’s largest single enlargem…