How Paul samuelson define macroeconomics?

Paul Samuelson defined macroeconomics as the branch of economics that studies the behavior and performance of an economy as a whole. It focuses on aggregate indicators such as GDP, unemployment rates, and inflation, and how they interact. Samuelson emphasized the importance of understanding these large-scale economic phenomena to develop effective policies for economic stability and growth. His work helped formalize macroeconomic theory, bridging microeconomic behavior with broader economic outcomes.