The 1910s Revolutionary was Vladimir Lenin, a Russian revolutionary, politician, and political theorist. He was the leader of the Bolshevik Party and the first head of the Soviet Union. Lenin was instrumental in the 1917 October Revolution, which overthrew the Tsarist autocracy and led to the establishment of the Soviet Union. He also played a major role in the Russian Civil War, which resulted in the Soviet Union's victory over the White Army. Lenin's ideas and policies had a profound impact on the development of the Soviet Union and the world.