The subdivisions of Croatia on the first level are the 20 counties (županija, pl. županije) and one city-county (grad, "city"). On the second level these are municipalities (općina, pl. općine) and towns (also named grad, pl. gradovi).Both of these type of subdivisions consist of settlements(naselje, pl. naselja). The 1st- and 2nd-level subdivisions are self-governed, while naselja are used mainly for statistical purposes, though they can also institute one or more levels of self-government, typically in cities.
Croatia was one of the six republics of the former Yugoslavia.
Croatia's rivers belong to the Adriatic and the Black Sea basin. The rivers in the interior are large and calmer (Sava, Drava, Danube).