Latvia for the next 45 years. The peaceful Singing Revolution, starting in 1987, called for Baltic emancipation from Soviet rule and condemning the Communist regime's illegal takeover. It ended with the Declaration on the Restoration of Independence of the Republic of Latvia on 4 May 1990, and restoring "de facto" independence on 21 August 1991. Latvia is a democratic sovereign state, parliamentary republic and a very highly developed country according to the United Nations Human Development Index. Its capital Riga served as the European Capital of Culture in 2014. Latvian is the official language. Latvia is a unitary state, divided into
Culture of Latvia Orthodox Christian minorities. Latvia is divided into several cultural and historical regions: Vidzeme, Latgale, Courland and Zemgale. Sometimes, Sēlija and Maliena are also distinguished. Latvians have the rich heritage of traditional folklore, especially folk songs. Dating back well over a thousand years, more than 1.2 million texts and 30,000 melodies of folk songs have been identified. A form of traditional architecture in Latvia is log houses. The position of houses differs among regions. In western Latvia, single farms are more popular and in villages, the houses are positioned in a circle around a central square. In eastern Latvia, villages are