Abstract
This chapter charts the evolution of the Single Market project, from its original conception in the 1950s, beginning with the Treaty of Rome and ending with the Single Market Act I and II. It explores the role of the Court of Justice of the EU (CJEU) in promoting market access, the balance between different economic ideals, and regulatory strategies used to foster market integration. The chapter highlights the importance of the Single Market in seeking to promote competitiveness and growth as well as the diffusion of its regulations beyond its borders. It concludes by demonstrating how both traditional international relations theories of integration and newer approaches in comparative politics and international relations, can be used to shed light on the governance of the Single Market.