As set out in the [Maastricht Treaty] (1992), any national of a European Member State is a citizen of the European Union. The aim of European citizenship is to strengthen and consolidate European identity by greater involvement of the citizens in the Community integration process. Thanks to the single market, citizens enjoy a series of general rights in various areas such as the free movement of goods and services, consumer protection and public health, equal opportunities and treatment, access to jobs and social protection. The Treaty on European Union, by establishing Union citizenship, confers on every Union citizen a fundamental and personal right to move and reside freely without reference to an economic activity. The right to vote and to stand as a candidate in elections to the European Parliament and in municipal elections in the Member State in which he resides and the right to protection by the diplomatic or consular authorities of any Member State in a non-member country are a concrete expression of the feeling of common citizenship. Directives adopted in 1993 and 1994 laid down the rules for giving effect to these rights.