After the events of the 1970s,economists learned that

Question

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The events of the 1970s showed economists that attempts to trade off unemployment and inflation would only work for a short period of time (A), shocks to the aggregate supply could alter the relationship between unemployment and inflation (B), the Phillips curve relationship was not stable (C), and the Phillips curve shifted over time (D). Therefore, all of the above (E) is the correct answer.

After the Events of the 1970s,economists Learned That