Each județ, respectively ținut, was ruled by a jude, respectively pârcălab, an officially appointed person who had administrative and judicial functions in a manner inspired from the organization of the late Byzantine Empire.
[4] Until 1948, each județ was further divided into a number of plăși (singular plasă), with each administered by a pretor (from the Latin praetor), appointed by the prefect.
In 1923 Romania adopted a new Constitution, and in 1927 it uniformized the traditional administrative systems of Transylvania, Bukovina and Bessarabia with that of the Romanian Old Kingdom.
Between 1941 and 1944, these territories together with Transnistria, were administered by Romania briefly, as the country was governed by a military dictatorship allied with Nazi Germany.
The county borders introduced in 1968 are largely in place, but administrative reform during the 1990s has devolved the functions of different authorities in line with transition from a totalitarian communist system to a modern democracy.
These correspond to NUTS II-level divisions in European Union member states, but do not actually have an administrative status and do not have a legislative or executive council or government.
As in all modern democracies, the political power in Romania is divided into three independent branches: legislative, executive, and judicial.
As of 2010 there have been several proposals for the administrative reorganization of Romania made by the presidential commission tasked with the analysis of the political and constitutional regime.
The counties will be grouped into several regions (9 to 15) based on common historical and economic characteristics (NUTS II level).
Furthermore, a NUTS IV level division, called plasă or canton will probably be added in order to meet the EU statistical and administrative requirements.
The criteria used by NCS for delimiting the regions is a combination of geographical location and homogeneity based on population density.