How did the Great Depression help to create new political orders in many countries

Explanation:

The collapse in raw material and agricultural commodity prices led to social unrest, resulting in the rise of military dictatorships that promised to maintain order. A second response to the Depression was fascism and militarism--a response found in Germany, Italy, and Japan.

Explanation:    a new defensive tactic known as trench warfare

Trench warfare allowed the war to drag on for long periods of time because of the stalemates that ensue from the opposing armies refusing to give up the land under their controls, resulting in high casualties in no man's land.