Answer:
There many consequences of WWI on the nations of Europe.
One important consequence is the loss of relative power and economic position in the world. Though Britain and France kept their colonial empires, their economic might was weakened by the astronomic costs of the war and by the terrible losses of manpower, especially of young men. If affected them demographically and in terms od development. On the contrary, the global economic position and the relative weight in world affairs of the United States were strengthened.
Austria-Hungary ceased to be en empire and disintegrated. Some new nations were created at Versailles by the victors at its expense (Yugoslavia, Poland, for example). Vienna had to pay reparations as a defeated power.
Germany lost its colonies in Africa and Asia and territory to France. Extremely onerous reparations were imposed on the German state. This fact, high inflation and unemployment in the 1920s created deep grievances and much disatisfaction. That situation helped Adolf Hitler and the Nazis take advantage and come to power .
Russia also lost many territories and had to pay high war reparations. In the mess created by its dismay performance in the war, the rule of the Tsar ended and the Bolsheviks took power.
Step-by-step explanation: