Portugal (full name, Portuguese Republic) covers an area of approximately 92,300 sq km. Its terrain is mountainous to the north of the Tagus River, with rolling plains to the south. Portugal borders Spain, and has 1,793km of coastline. The country is divided into 18 districts (Aveiro, Beja, Braga, Braganca, Castelo Branco, Coimbra, Evora, Faro, Guarda, Leiria, Lisboa (Lisbon), Portalegre, Porto, Santarem, Setubal, Viana do Castelo, Vila Real and Viseu) and two autonomous regions (Acores/The Azores and Madeira). Lisbon is the capital, with a time zone aligned with GMT. The currency is the euro, and exports include textiles, clothing, wood products and electrical equipment. The population of approximately 10,700,000 people comprises an ethnic makeup that is mostly a homogeneous mix of Mediterranean stock. The primary language is Portuguese, and the predominant religion is Christianity.