Croatia (full name, Republic of Croatia) covers an area of approximately 57,000 sq km. Its terrain is diverse, consisting of flat plains along the Hungarian border, and low mountains and highlands near the Adriatic coastline. Croatia borders Bosnia and Herzegovina, Hungary, Serbia, Montenegro and Slovenia, and has 5,835km of coastline (which includes some surrounding islands). The country is divided into 20 counties (Bjelovarsko-Bilogorska, Brodsko-Posavska, Dubrovacko-Neretvanska, Istarska, Karlovacka, Koprivnicko-Krizevacka, Krapinsko-Zagorska, Licko-Senjska, Medimurska, Osjecko-Baranjska, Pozesko-Slavonska, Primorsko-Goranska, Sibensko-Kninska, Sisacko-Moslavacka, Splitsko-Dalmatinska, Varazdinska, Viroviticko-Podravska, Vukovarsko-Srijemska, Zadarska, Zagrebacka) and one city (Zagreb). Zagreb is the capital, with a time difference of 1 hour ahead of GMT. The currency is the kuna, and exports include machinery and transport equipment, clothing and chemicals. The population of approximately 4,500,000 people comprises an ethnic makeup that is 89.6% Croat. The primary language is Croatian, and the predominant religion is Christianity.