The Westminster System is a parliamentary system of governance that originated in the United Kingdom. It features a bicameral legislature, typically consisting of an elected lower house and an appointed or hereditary upper house. The head of government, known as the Prime Minister, is usually the leader of the majority party in the lower house and is responsible for running the government. This system emphasizes the principle of responsible government, where the executive branch is accountable to the legislature. Many countries, including Canada, Australia, and India, have adopted variations of the Westminster System, reflecting its influence on democratic governance worldwide.