On Wednesday, ten countries celebrated 20 years in the European Union. Poland had found its place “among friends, among allies, in Europe, at home: This is what generations of Poles have fought for,” said Polish Foreign Minister Radosław Sikorski in a ceremony at the Polish-German border, on the bridge over the Oder river that joins the cities of Słubice and Frankfurt an der Oder. May 1, 2004 was the largest single expansion in the history of the EU. Of the ten countries that joined that day, eight had emerged from behind the Iron Curtain in the wake of the upheavals of 1989: Poland, the Czech…