Much of Europe before 1914 had prided itself on the relative legal security and stability that many of its states provided for their citizens . . . One of the novelties of the February Revolution in Russia in 1917 was that the pressures of war led to the first major crack in this system, soon to be followed by its complete implosion . . . it was defeat in the Great War, and the collapse of the pre-war system, that allowed new actors to compete violently for power, generally without the relative restraint that had characterized social and political conflicts prior to 1914. Robert Gerwarth, The Vanquished: Why the First World War Failed to End. 2016
According to Gerwarth, how did World War I facilitate the rise of violent new regimes?
A. The establish of the Soviet Union helped Communism spread across Europe
B. The war destroyed a stable order in Europe, opening the door for new movements
C. The defeated powers hungered for revenge
D. European nations were proud of their ethnic and racial uniformity