summarize-key-developments-in-macroeconomic-history.-Specifically,-what-are-the-similarities-and-differences-between-Keynesian-and-classical-economics?-How-does-each-handle-issues-of-unemployment?-What-new-developments-starting-in-the-1980s-have-changed-macroeconomic-thought?

--Identifies-similarities-and-differences-in-Keynesian-and-classical-economic-thought.

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

--Accurately-describes-new-developments-since-the-1980s.-