If Keynesians acknowledge that there does exist a vertical aggregate supply curve in the long-run,then,does that invalidate their belief in the use of monetary and fiscal policy to stabilize output? Explain.

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The Answer of If Keynesians acknowledge that there does exist a vertical aggregate supply curve in the long-run,then,does that invalidate their belief in the use of monetary and fiscal policy to stabilize output? Explain.

If Keynesians Acknowledge That There Does Exist a Vertical Aggregate