Macroeconomics is the branch of economics that studies the overall behavior and performance of an economy. It focuses on large-scale economic factors such as national income, GDP, inflation, unemployment, and monetary and fiscal policies. Macroeconomics looks at how different sectors interact, how government policies affect economic stability and growth, and how economies respond to crises or global changes. It provides insights into managing economic cycles, maintaining stability, and promoting sustainable growth at a national or global level.