What event did Vladimir Lenin take power?

Lenin seized power in 1917 in Russia.
Lenin took power in Russia on October 25, 1917, according to the Russian Julian calendar at the time. It was November 7 elsewhere in most of the world. This was the date Lenin and his Bolshevik Party engineered the October Revolution when he overthrew the Provisional Government and took full control of the government as head of the Bolshevik Party.