The Government of Canada, officially Her Majesty's Government, is the corporation responsible for the federal administration of Canada. In Canadian English, the term can mean either the collective set of institutions (the legislative, executive and judicial branches) or specifically the Queen-in-Council (the executive). In both senses, the current construct was established at Confederation through the Constitution Act, 1867—as a federal constitutional monarchy, wherein the Canadian Crown acts as the core, or "the most basic building block", of its Westminster-style parliamentary democracy. The Crown is thus the foundation of the executive, legislative, and judicial branches of the Canadian government. Further elements of governance are outlined in the rest of the Canadian Constitution, which includes written statutes in addition to court rulings, and unwritten conventions developed over centuries.