Due to historical differences, countries often differ in how quickly a change
in actual inflation is incorporated into a change in expected inflation. In a
country such as Japan, which has had very little inflation in recent memory,
it will take longer for a change in the actual inflation rate to be reflected
in a corresponding change in the expected inflation rate. In contrast, in a
country such as Zimbabwe, which has recently had very high inflation, a change
in the actual inflation rate will immediately be reflected in a corresponding
change in the expected inflation rate. What does this imply about the short-
run and long-run Phillips curves in these two types of countries? What does
this imply about the effectiveness of monetary and fiscal policy to reduce the
unemployment rate?