According to gerwarth, how did world war 1 facilitate the rise of violence new regimes

According to Robert Gerwarth, the World War 1 facilitates the rise of violence new regimes because the war destroyed a stable order in Europe, opening the door for new movements. The war pressures directed to the empire's disintegration. The Austro-Hungarian, the Russian, and the Ottoman had suffered for centuries, blowing up a struggle for control and territory. Stable cultures are also collapsed. Gerwarth numbered twenty-seven intense battles in Europe happened after the war.