Do You have any statement along with this Question ?
Some changes were:
1.The map of Europe was redrawn following World War I.
2.Changed the status of women in most societies in Europe and the United States.With the introduction of conscription, most men left to fight in the war and women stepped in to take over the business and jobs.
3.World War I marked the beginning of the decline of the British Empire.
and many more...
