Answer:
The right answers are:
Lenin and Trotsky.
Step-by-step explanation:
Vladimir Ilich Lenin was the main Bolshevik leader and Leon Trotsky was another major activist. Both were instrumental in the Bolshevik Party´s quest for power and opposition to the "bourgeois" government of moderate socialist Aleksandr Kerensky that ruled Russia for a few months after the fall of the last Tsar. His government was brought down by the successful Bolshevik revolt in St. Petersburg on November 7, 1917 (October in Russian old style).