What does the Long Run Phillips Curve indicate about the relationship between inflation and unemployment in the long run?

The Long Run Phillips Curve shows that in the long run, there is no trade-off between inflation and unemployment. This means that while short-term changes can lead to lower unemployment at the cost of higher inflation, over time, the economy adjusts. In the long run, the unemployment rate settles at a natural level, which is not affected by inflation. For example, if a government tries to keep unemployment very low by increasing money supply, it may lead to higher inflation, but eventually, people will expect higher prices and adjust their behavior, resulting in the unemployment rate returning to its natural level. Thus, the curve indicates that policymakers cannot achieve lower unemployment permanently through inflationary measures.