The United States Constitution is the supreme law of the United States, ratified on 21 June 1788 nine months after the Constitutional Convention convened to discuss the creation of the new country. The constitution divided the federal government into the executive branch (President), legislative branch (US Congress), and judicial branch (US Supreme Court), and the Constitution established a united federal government. In 1789, it was passed, and it has been amended twenty-seven times, including the Bill of Rights, passed to add more rights to the US citizen.