The document provides background on the rise of socialism in Europe in the late 19th century. It discusses the political ideologies of liberals, radicals, and conservatives that emerged after the French Revolution. Industrialization led to poor working conditions, which liberals and radicals sought to address. Socialists advocated for replacing private property with collective social control. The Russian Revolution of 1917 was a significant event that brought socialists to power in one of the least industrialized European states. It overthrew the Russian monarchy and established the Soviet Union.