History of Latvia only St. Petersburg and Moscow by the number of industrial workers, and at the turn of the century over 90% of Latvians could read. In this regard, Latvia was equally primed for radical leftism and nationalism. In all, spearheaded by the Latvian Social Democratic Workers’ Party (LSDSP), the governorates making up what is now Latvia were probably the most ungovernable in the whole Russian Empire. Following the shooting of demonstrators in St. Petersburg on January 9, 1905 a wide-scale general strike began in Riga. On January 13 Russian army troops opened fire on demonstrators in Riga killing 73 and injuring
On the Restoration of Independence of the Republic of Latvia that in April 1920 the Latvian nation followed the principle of self-determination by electing a Constitutional Assembly of Latvia, which adopted the Constitution of Latvia on 15 February 1922, in general, equal and direct elections, based on proportional representation. On 23 August 1939, the Soviet Union and Nazi Germany signed the Molotov–Ribbentrop Pact, which included a secret protocol dividing Eastern Europe into spheres of influence. Latvia was apportioned to the Soviet sphere and on 5 October 1939, signed a mutual assistance pact. On 16 June 1940, the Soviet Union issued an ultimatum to Latvia accusing it of not carrying out