It's longer than that, Russian empire started collapsing earlier, look at Crimea War, Russo-Japanese war, World War I, etc. Unfortunatelly, big empires don't collapse fast and peacefully.
February revolution
Provisional government with Karensky
October revolution
Bolshevik revolution complete in 1922 after reds defeat whites.
Bolshevik revolution would not have happened without First World War.
Hitler invaded Russia in 1941. Unsuccessful like Napoleon in 1812.
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Bolshevik revolution would not have happened without First World War.
Kinda. But remember there was 1905 Revolution before that, after Russian defeat in war against Japan. So, two defeats in big wars lead to two revolutions. And collapse of USSR was also partially caused by defeat in Afghanistan + Chernobyl disaster (but in fact it was inevitable sooner or later anway as communism just doesn't work, but that's different story).
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1905 revolution was trivial
Romanov dynasty was still in place
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It wasn't actually so simple, it was different in different parts of Russian empire. In Latvia it wa also revolution against German speaking local nobility, at some point revolutionaries fully controlled several towns and railway lines. And it had lasting effect, which impacted events of 1917 - Constitution was enacted and parliament was established. Vladimir Lenin later stated that 1905 revolution was the great rehearsal and without it "revolution" of 1917 would have been impossible (bolshevik uprising was actually just coup d'etat, it being mass revolution is Soviet propaganda).
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Revolution and coup d’etat are synonymous.
We can quibble about semantics but the effect is the same: change in leadership.
Glorious Revolution was also a coup
Coup can have popular support or not.
After October Revolution there was a 5 year civil war between reds and whites. Karensky made a mistake by being neutral
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There was a lot of mistakes by various parties back then, bolsheviks used that and seized power. They were small fraction actually at the beginning of 1917.
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Very small. And Lenin was stuck in Germany in 1917, almost didn’t make it to Russia.
By 1922 they consolidated power.
More proof a small dangerous minority can gain influence and power
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More proof a small dangerous minority can gain influence and power
Exactly, that's what neo-marxists are trying to do in the West for decades.