The document discusses the evolution of the European Union from a customs union to a common market. It outlines some key EU institutions and policies around agriculture, regional development, competition, taxation, and social policy. It then discusses the removal of non-tariff barriers through the Single European Act of 1987 to create a true common market. Potential benefits included reduced costs through greater specialization and economies of scale, while critics argued it could exacerbate economic inequality and corporate power within Europe.