1. Introduction. 2. The Theory and Practice of Regional Integration. 3. The Rome Treaty and Its Original Agenda (1957-1975). 4. From Euro-Pessimism to Renewed Euro-Optimism (1975-1989). 5. European Union in the 1990s. 6. Agendas and Agenda Setting in the European Union. 7. The Snake, the EMS, and the EMU. 8. Common Agricultural Policy. 9. Regional, Social, and Industrial Policies. 10. External Economic Relations. 11. Common Foreign and Domestic Security Policies. 12. Conclusion.