The EEC Treaty said that the common market should be established gradually over a transitional period comprising three stages. When the transitional period expired in 1969, the common market was still far from complete. ‘From Common Market to European Union’ explains how in February 1986, the Member States signed a new treaty called the Single European Act committing them to establishing the internal market by the end of 1992. At the same time, the Member States began to explore widening the remit of the EEC to embrace additional policy areas. In 1992, the Maastricht Treaty on European Union was signed, giving birth to a new legal entity: the European Union.