Macroeconomics is 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 is one of the two most general fields in economics. Macroeconomists study aggregated indicators such as GDP, unemployment rates, and price indixes to understand how the whole economy functions. Macroeconomists develop models that explain the relationship between such factors as national income, output, consumption… (More on Macroeconomics)