This chapter examines the impact of Europeanization upon the national economies of European Union member states. It considers how successful the EU has been in promoting its goal of building a single European economy out of the diverse national economies of its member states; how much convergence has occurred among EU member states, and how much divergence remains; and what impact the economic crisis beginning in 2008 has had on the EU and its member states. To answer these questions, the chapter traces the development of Europe’s national economies from the post-war period until today. It also analyses the impact of globalization and Europeanization on post-war varieties of capitalism before concluding with reflections on future patterns of political economic development in the EU in light of the economic crisis.