Fifty years after the conclusion of the Treaties of Rome (25 March 1957) and the foundation of the European Economic Community, Brussels has become a political world city and international capital with global influence. The acta of the interuniversity and international colloquium, held in Brussels on 18 and 19 December 2006, present a general outline of the research results and 26 contributions, based on original research and divided into three parts. The first part focuses on Brussels' posit...