Macroeconomics (from Greek: μακρύ-ς /ma΄kri-s/ long, large and οικονομία /ikono΄mia/ economy) a branch of economics that deals with the performance, structure, and behavior of a national or regional economy as a whole. Along with microeconomics, macroeconomics's one of the two most general fields in economics. It's the study of the behavior and decision-making of entire economies. Macroeconomists study aggregat… (More on Macro-economics)