<P> Some constitutions are largely, but not wholly, codified . For example, in the Constitution of Australia, most of its fundamental political principles and regulations concerning the relationship between branches of government, and concerning the government and the individual are codified in a single document, the Constitution of the Commonwealth of Australia . However, the presence of statutes with constitutional significance, namely the Statute of Westminster, as adopted by the Commonwealth in the Statute of Westminster Adoption Act 1942, and the Australia Act 1986 means that Australia's constitution is not contained in a single constitutional document . It means the Constitution of Australia is uncodified, it also contains constitutional conventions, thus is partially unwritten . </P> <P> The Constitution of Canada, which evolved from the British North America Acts until severed from nominal British control by the Canada Act 1982 (analogous to the Australia Act 1986), is a similar example . Canada's constitution consists of almost 30 different statutes . </P> <P> The terms written constitution and codified constitution are often used interchangeably, as are unwritten constitution and uncodified constitution, although this usage is technically inaccurate . A codified constitution is a single document; states that do not have such a document have uncodified, but not entirely unwritten, constitutions, since much of an uncodified constitution is usually written in laws such as the Basic Laws of Israel and the Parliament Acts of the United Kingdom . Uncodified constitutions largely lack protection against amendment by the government of the time . For example, the UK Fixed - term Parliaments Act 2011 legislated by simple majority for strictly fixed - term parliaments; until then the ruling party could call a general election at any convenient time up to the maximum term of five years . This change would require a constitutional amendment in most nations . </P> <Table> <Tr> <Td> </Td> <Td> This section possibly contains original research . Please improve it by verifying the claims made and adding inline citations . Statements consisting only of original research should be removed . (December 2010) (Learn how and when to remove this template message) </Td> </Tr> </Table>

Who came up with the idea of the constitution