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
Museum of the Occupation of Latvia after Paulis Lazda, a History Professor at the University of Wisconsin–Eau Claire, proposed the idea to the Ministry of Culture of the Republic of Latvia to create a museum covering the occupation period of Latvia, from 1940-1991. This led to the establishment of the Occupation Museum Foundation (OMF), now the Occupation Museum Association (OMB), in spring 1993. The OMF was made of 11 people who aimed to establish, administer and finance the museum. The first exhibition of the museum opened on 1 July 1993. The exhibition covered the period of the first Soviet occupation of Latvia from 1940 to 1941.