Public economics is a branch of economics that focuses on the study of government policies and their impact on the economy. It analyzes how public sector decisions, such as taxation, public spending, and regulation, affect the allocation of resources and the overall economic well-being of society. Public economics explores topics such as public finance, welfare economics, fiscal policy, and the economics of public goods. It is a crucial field for policymakers, economists, and individuals who are interested in understanding the role of government in shaping economic outcomes.