The Commonwealth Government refers to the federal government of a nation, particularly in countries like Australia and Canada. It is responsible for national affairs, including defense, immigration, and foreign policy. The Commonwealth Government operates under a constitution, which outlines its powers and responsibilities, and is typically composed of an elected parliament and a head of state. In a Commonwealth system, the government is divided into three branches: the executive, the legislative, and the judicial. The executive branch is led by the Prime Minister, who is supported by a cabinet. The legislative branch creates laws, while the judicial branch interprets them, ensuring a system of checks and balances.