From 1914 to 1991 are still the same just like in our timeline:
1914 : World War I happen when a certain funny Bosnian Serb assassinated Archduke Franz Ferdinand, heir to the Austro-Hungarian throne
1917 : October Revolution led by the Bolshevik Party of Vladimir Lenin
1918 : Central Powers surrender, thus ends of the World War I in 1918
1917 until 1922 : Russian Civil War
1922 : Founding of the Soviet Union
1924 : Lenin dies in 1924
1927 : Stalin came to power and Stalin Era begin
1927 - 1955 : The period encompassing the Industrialization and Collectivization, the Great Purge, the Molotov-Ribbentrop Pact, the Winter War, the invasion of the Baltic States by the Soviet Union, and the beginning of World War II with Nazi Germany's occupation of Poland, the Benelux countries, and France, is a significant historical juncture. It is marked by pivotal events such as Operation Barbarossa and the inception of the Great Patriotic War, the Battle of Moscow, the Siege of Leningrad, the Battle of Stalingrad, the Soviet counterattacks, the Battle of Kursk, and the eventual expulsion of the Nazis from Soviet territory. the Normandy landings of D-Day, the liberation of Poland, Czechoslovakia, Hungary, Romania, and Bulgaria by the Red Army, the capture of Berlin, the German surrender, the establishment of socialist governments in Central and Eastern Europe by the Soviet Union, the declaration of war by the Soviet Union on the Japanese Empire, the atomic bombings of Hiroshima and Nagasaki, the Japanese surrender, the end of World War II, the beginning of the Cold War in 1949, the establishment of NATO and the Warsaw Pact.
1953 : Death of Stalin and Khrushchev came to power
1953 - 1969 : The De-Stalinization and Khrushchev Thaw began, the Korean War, the Hungarian Revolution, the Vietnam War, and the Space Race between the USA and USSR commenced. Sputnik-1, the first satellite in space, was launched by the USSR, and Yuri Gagarin became the first human in space when he made the first manned orbital flight with Vostok 1. The Sino-Soviet split, the Cuban Missile Crisis, and Khrushchev's resignation from power and subsequent replacement by Brezhnev marked the beginning of the Brezhnev Era. In 1969, Neil Armstrong became the first person to walk on the moon with the Apollo 11 mission.
1970 : In our timeline, the Soviet Union did not send a crewed mission to the moon due to a lack of interest from the leadership of the Soviet Union, specifically from Brezhnev. However, in this alternative timeline, the Soviet Union succeeded in sending its first person to the moon with Luna 15 on November 17, 1970. This mission was accomplished with Alexei Leonov inside the spacecraft, making him the second person to ever walk on the moon and the Soviet Union became the second country to successfully reach the moon.
1970 - 1990 : The Era of Stagnation began in the Soviet Union, the Chilean coup d'état, the Fall of Saigon, the end of the Vietnam War, the Détente, the Salt-1, the New 1977 Constitution, the Salt-2, the Afghan War began, Kosygin died in 1980, Brezhnev died and was replaced by the KGB chief. Yuri Andropov died in 1982, and Konstantin Chernenko replaced him in 1984. Chernenko died in 1985, and Mikhail Gorbachev became General Secretary of the Communist Party. That's when Glasnost and Perestroika reforms began. The Chernobyl disaster in 1986, the Soviet withdrawal from Afghanistan, the Malta Summit with Bush and Gorbachev, the end of the Cold War, the fall of the Berlin Wall, Germany reuniting, the Eastern Bloc disintegrating, and the Warsaw Pact dissolving-that was a lot to take in. The Soviet Union was in a state of chaos.
1991 : The August Coup
On 19th of August 1991, Soviet Army rolls into Moscow and the August Coup begins. State Committee on the State of Emergency is formed. Leaders of the coup are the same as in OTL, on the 20th of August Boris Yeltsin has been found by KGB (lead by Vladimir Kryuchkov) and was executed. On the 22nd of August, Gorbachev (under house arrest) officially resigned from the position of General Secretary of the Communist Party of the Soviet Union and has handed the position to the vice president of the USSR Gennady Yanayev, with Dmitry Yazov as the defence minister and Boris Pugo the minister of the interior rooting out the final pro-Yeltsin elements from the military and state apparatus. The August Coup officially ended on the 27th of August 1991, there was no notable reaction from the public of the USSR considering that besides Gorbachev's resignation, announcement of forming of the State Committee on the State of Emergency and news of Yeltsin's death under "mysterious conditions" there was no TV broadcast of the coup.
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