Russia's advancements were repelled in what was called

The February Revolution of 1917

Explanation:

The February Revolution of 1917 in the Russian Empire marked the first stage of the Russian Revolution of 1917. It caused the abdication of Tsar Nicholas II, put an end to the Russian monarchy and led to the formation of a provisional government. This revolution was born as a reaction to the policy carried out by the Tsar, his refusal to grant liberalizing political reforms and the participation of Russia in the First World War, which had inflicted great hardships on the population. The nascent regime resulted from an alliance between liberals and socialists that was to give way to a democratically elected executive and a constituent assembly.

europe would not recognize the confederacy as an independent nation.