The Rot from Within
The collapse of the Russian Empire didn't happen overnight. It began with the 1905 Revolution, a "dress rehearsal" where soldiers fired on peaceful protesters (Bloody Sunday). Tsar Nicholas II survived, but his authority was shattered.
By 1914, World War I pushed Russia to the brink. The army was poorly led and ill-equipped; soldiers fought barefoot. At home, the mystic Rasputin held sway over the Tsarina, convincing the public that the monarchy was not just incompetent, but corrupt. Starvation gripped the cities.
The people had nothing left to lose.