What world event is similar to 'The Wizard of Oz'?

Large-scale conflicts and natural catastrophes are world events that are similar to what happens in "The Wizard of Oz."

Specifically, "The Wizard of Oz" tells the story of a young girl who gets lost and finds her way back home. The story therefore resembles the involuntary displacement of people on a large scale. Such happens during and after major conflicts and natural catastrophes, such as world wars and major earthquakes.