The territorial organization of Serbia is regulated by the Law on Territorial Organization, adopted by the National Assembly of Serbia on 29 December 2007. Under the Law, the units of the territorial organization are: municipalities, cities and autonomous provinces.
The ethnic population of the Republic of Serbia is heterogeneous, which resulted from the country's turbulent past. The majority of the population of Serbia are Serbs, but another 37 nationalities also live on its territory. All citizens have equal rights and responsibilities and enjoy full ethnic equality.
Danube and Morava rivers are the largest in the country and constitute its main river axes.