National governments are the political entities that exercise authority over a specific territory and its population. They are responsible for creating and enforcing laws, managing public services, and representing the country in international affairs. Each national government operates within a framework defined by its constitution and legal system, which outlines the powers and responsibilities of various branches of government. The structure of national governments can vary widely, with some operating as democracies, while others may be authoritarian regimes. Key components often include the executive branch, led by a President or Prime Minister, the legislative branch, and the judiciary. These institutions work together to maintain order and promote the welfare of the citizens.