According to what you just learned about cause and effect, the “cause” was poor economic policies, and the “effect” was

the answer would be option c. the chief result of u.s. participation in world war i is that, the u.s. forces ended the stalemate and led to an allied victory. after the us joined wwi, the allies had the forces they need to triumph. hope this is the answer that you are looking for.

explanation:

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the answer is a. 250 percent.