Answer:
Explanation:
WW1 caused the downfall of four monarchies: Germany, Turkey, Austria-Hungary and Russia. The war made people more open to other ideologies, such as the Bolsheviks that came to power in Russia and fascism that triumphed in Italy and even later in Germany.
Many civilians died because of deliberate genocide, massacres, mass-bombings, disease, and starvation. The Soviet Union lost around 27 million people during the war, including 8.7 million military and 19 million civilian deaths in WW2.
