The single market and trade policy are Europe's major economic achievements and its best assets in times of increasing globalisation. European integration, as well as any other regional integration, is impossible without these two policies, which are a good example of how to implement a positive form of globalisation. They represent an engine for growth and building a more competitive EU economy. The single market and trade policy, by allowing people, goods, services and capital to move more freely through both Member States and the world, open up new opportunities for citizens, workers, businesses and consumers, creating the jobs and growth Europe so urgently needs. This collection of essays addresses the various facets of these two pillars of European integration. A more efficient single market creates the conditions for a more open trade policy, and vice-versa. Growth has been lacking in Europe in recent years, and enhancing these two assets is the most fruitful way to find it again.