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
On the Restoration of Independence of the Republic of Latvia a new edition of the Constitution of Latvia should be created. Social, economic, cultural and political rights were granted to citizens and residents of Latvia in accordance with international human rights. The declaration also stated that Latvia would form its relationship with the Soviet Union on the basis of the Latvian–Soviet Peace Treaty of 1920, in which the Soviet Union had recognized the independence of Latvia as inviolable "for all future time". The 4th of May is a national holiday in Latvia. In its beginning the Declaration establishes several historical facts and on the basis of these facts concludes that