Following the end of the Cold War, the European Economic Community pushed for closer integration, co-operation in foreign and home affairs, and started to increase its membership into the neutral and former communist countries. In 1993, the Maastricht Treaty established the European Union, succeeding the EEC and furthering political co-operation. The neutral countries of Austria, Finland and Sweden acceded to the EU, and those that didn't join were tied into the EU's economic market via the European Economic Area. These countries also entered the Schengen Agreement which lifted border controls between member states.
