The Constitution Act, 1867, originally known as the British North America Act (BNA Act) was the law passed by the British Parliament creating the Dominion of Canada at Confederation.
Legislation Acts passed by the Parliament of Canada and by Provincial legislatures are the primary source of law in Canada. Sections 91 and 92 of the Constitution Act, 1867 enumerate the subject matters upon which either level of government (Federal and Provincial) may legitimately enact legislation.