The most important accomplishment of the European Union is that it made war among its members impossible. Their in- terconnected economies have led to unprecedented prosperity for the EU’s 4 5 million citizens and have created the most profitable consumer market in the world. Other regional or- ganisations are studying the model of the EU, and may choose some elements – even if they are unlikely to adopt the same model, because no nation seeking to increase its economic power would be willing to see its national sovereignty dimin- ished. The regional integration of Europe has led to nations transfer- ring some of their national sovereignty.
