1904 - 1905. The Russo-Japanese War.

1905: "Bloody Sunday" in St. Petersburg (9.01). The beginning of the first Russian Revolution.

1908. The law on compulsory primary education was introduced.

1914. The assassination of the heir to the Austro-Hungarian throne in Sarajevo (28.06). The beginning of the First World War.

1917: The February Revolution in Petrograd. Nicholas II's abdication (15 March). The October Revolution and the formation of the Council of People's Commissars led by Vladimir Lenin.

1918. Decree on the creation of the Workers' and Peasants' Red Army (28.01). The beginning of the civil war and the intervention of the Entente countries against the Soviet Republic.

1924: The death of Vladimir Lenin (21 January). The first Constitution of the USSR was approved at the Second Congress of Soviets (31 January).

1925 - 1929. The beginning of the country's accelerated industrialization, declared at the 14th Congress of the All-Union Communist Party (Bolsheviks), and the complete collectivization of the countryside.

1934: The Chelyuskin Expedition and the establishment of the title of Hero of the Soviet Union (16.04).

1936: Adoption of the new Constitution of the USSR.

1938 - 1940. Defeat of the Japanese troops at Lake Hassan, fighting on the Khalkhin Gol River, and the Soviet-Finnish War.

1941-1945 The Great Patriotic War against Nazi Germany. Unconditional surrender of Germany (0 hours) 16 min. 9.05.45). The war with Japan.

1948 - 1949. Successful tests of the first Soviet ballistic missile, R-1 (10.10.48), and the first Soviet atomic bomb (25.09.49).

1953. The USSR tests the first hydrogen bomb (31.08).

1957-1961 The beginning of the space age. Launch of the first satellite "Sputnik-1" (4.10.57). The first human spaceflight (Yuri Gagarin 12.04.61).

1977 The new Constitution of the USSR was adopted. 1979 Soviet troops entered Afghanistan. This marked the beginning of the Afghan War, which lasted for over nine years.

1982: Yuri Andropov comes to power. An attempt to reform society.

1985-1990 At the initiative of the new General Secretary of the CPSU Central Committee, Mikhail Gorbachev, perestroika began in the country. Chernobyl disaster (26.04.86). Introduction of a multi-party system and establishment of the post of President of the USSR (12-15.03.90). "Parade of Sovereignties" - most Union republics adopt declarations of state sovereignty (1990).

1991 - 1996. Dissolution of the Warsaw Pact (1.04.91). Cessation of activities of political parties and movements in the armed forces. Signing of the Belavezha Accords (8.12.91). Resignation of the President of the USSR M. Gorbachev, - the creation of the CIS. The tricolor flag of the Russian Federation is raised over the Kremlin (25.12.91). Decree of the President of the Russian Federation B. Yeltsin on the creation of the Armed Forces of Russia. The Chechen conflict (11.12.94 - 30.07.96).