Which area of economics focuses on the whole economy's structure and behavior?

Macroeconomics is the branch of economics that examines the economy as a whole. It focuses on aggregate indicators such as GDP, unemployment rates, and inflation, analyzing how different sectors of the economy interact and how national policies can affect overall economic performance. Macroeconomics studies broad phenomena, such as economic growth, business cycles, and the impact of fiscal and monetary policy on the economy at large, helping to understand fluctuations and trends that affect the entire economy instead of just individual markets or sectors.

This level of analysis is crucial for policymakers and economists as they look to understand and address large-scale economic issues, formulate national financial strategies, and assess how economic policies can lead to different outcomes on a national level.