How did World War I change the map of the world? Explain.

3 empires were dismantled.

Explanation:

Europe, Africa, and Asia looked different before WW1. The borders were changed for political reasons and not for economic reasons. It probably took about 5 years to really dismantle the empires. I am sure that this was kind of different for these people because they were not quite sure where the border actually was in the beginning.