Summarizekey developments in macroeconomic history.

Specifically, what are the similarities and differences between Keynesian and classical economics?

Identifies similarities and differences in Keynesian and classical economic thought.

How does each handle issues of unemployment?

Describes how Keynesian and classical economists address the issue of unemployment.

What new developments starting in the 1980s have changed macroeconomic thought?

Accurately describes new developments since the 1980s.