Macroeconomics is the branch of economics that studies the behavior and performance of an economy as a whole. It focuses on large-scale economic factors such as national income, gross domestic product (GDP), unemployment rates, and inflation. By analyzing these elements, macroeconomics helps to understand how economies grow, fluctuate, and respond to various policies. This field also examines the interactions between different sectors of the economy, including government, business, and households. Macroeconomic policies, such as monetary policy and fiscal policy, are implemented to manage economic stability and promote growth, influencing overall economic health and living standards.