whereas EU citizenship and its related rights were initially introduced in 1992 by the Treaty of Maastricht and were further enhanced by the Treaty of Lisbon, which entered into force in December 2009, as well as by the EU Charter of Fundamental Rights;
ker so bili državljanstvo EU in z njim povezane pravice prvič uvedeni leta 1992 z Maastrichtsko pogodbo ter nadalje okrepljeni z Lizbonsko pogodbo, ki je začela veljati decembra 2009, in Listino Evropske unije o temeljnih pravicah;