what do you mean by macroeconomics

Macroeconomics is a branch of economics that studies the behavior and performance of an economy as a whole. It focuses on the aggregate changes in the economy such as unemployment, growth rate, gross domestic product, and inflation. Macroeconomics examines the structure, performance, behavior, and decision-making of the whole, or aggregate, economy. The two main areas of macroeconomic research are long-term economic growth and shorter-term business cycles. Macroeconomists study questions such as what makes the business cycle fluctuate, what makes economic growth go up and down, how are prices determined, what is the rate of inflation, and what determines it, what is productivity growth, and what are the determinants of productivity. Macroeconomics is used to evaluate performance and develop actions that can positively affect an economy. Governments and corporations use macroeconomic models to help in formulating economic policies and strategies.