macroeconomics is a branch of economics that deals with the performance , structure and behavior of a national economy as a whole . Macroeconomists seek to understand the determinants of aggregate trends in a economy with particular focus on gross national income , unemployment, inflation, investment, and international trade . In contracst , microeconomics is primarily focused on the determination of prices and the role of prices in allocating scarce resources.While macroeconomics is a broad field of study , there are two areas of research that we emblematic of the discipline : the attempt to understand the causes and consequences of short-run fluctuations in national income ( the business cycle) and the attempt to understand the determinants of long-run economic growth (increasesin national income) .macroeconomic models and their forcasts are used by both governments and large corporations to assist in the development and evalution of economic policy and business strategy governments make adjustments through policy changes which they hope will succeed in stabilizing the economy. Governments believe that the success of these adjustments is necessary to maintain srability and continue growth. This economic management is achieved througth two types of strategies : fiscal and monetary policy
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