Answer:
Two European empires were dismantled.
Step-by-step explanation:
World war I or the Great war is one of the important events in the history of mankind it changed the world and because of it other events have happened later, this was the first war of its kind where Mankind has seen so much of violence and bloodshed. modern techniques and modern weapons like chemical gas were used to kill enemies.
In fact, because of the word war 1, The great depression, world war II, the holocaust and the collapsed of European empires have happened and Two European empires were dismantled were "The German Empire and the Austro- Hungarian Empire".