Belgium (full name, Kingdom of Belgium) covers an area of approximately 30,500 sq km with a terrain consisting of flat coastal plains in the northwest, central rolling hills, and rugged mountains in the southeast. Belgium borders France, Germany, Luxembourg and Netherlands, and has 67 km of coastline. The country is divided into 3 regions: Brussels (Capital Region), Flanders (Flemish Region), and Wallonia (the Walloon Region). Brussels is the capital, with a time difference of 1 hour ahead of GMT. The currency is the euro, and exports include machinery, electrical equipment, chemicals, vehicles, metals and diamonds. The population of approximately 10,400,000 people comprises an ethnic makeup that is 58% Flemish and 31% Walloon. The primary languages are Flemish (a local variant of Dutch), French and German, and the predominant religion is Christianity.