Final answer:
The Great Spirit took down the Bridge of the Gods to punish the Plateau Indians for their hostility and fighting, as portrayed in the legend recounted by Ella E. Clark.
Step-by-step explanation:
According to the legend “The Bridge of the Gods,” by Ella E. Clark, the Great Spirit took down the Bridge of the Gods as punishment for the wickedness of the people. Wyeast and Klickitat, two chiefs, grew jealous of each other and started quarreling, which led to much fighting and the deaths of many warriors. The destruction of the bridge by the Great Spirit represents a significant spiritual force imposing consequences on the Plateau Indians to maintain the moral order.