France is representative democracy organised as a unitary, semi-presidential republic. As one of the earliest republics of the modern world, democratic traditions and values are deeply rooted in French culture, identity and politics. The Constitution of the Fifth Republic was approved by referendum on 28 September 1958, establishing a framework consisting of executive, legislative and judicial branches. It sought to address the instability of the Third and Fourth Republics by combining elements of both parliamentary and presidential systems, whilst greatly strengthening the authority of the executive relative to the legislature.