The Statute of Westminster1931 was the enactment of the United Kingdom Parliament (December 11, 1931) which established a status of legislative equality between the self-governing dominions of the British Empire and the United Kingdom.
The Statute is sometimes referred to, especially in the former dominions, as the Treaty of Westminster, although it was not in the form of a treaty.
The Statute gave effect to certain political resolutions passed by the Imperial Conferences of 1926 and 1930, in particular the Balfour Declaration of 1926.
The Statute of Westminster1931 was the enactment of the United Kingdom Parliament (December 11, 1931) which established the legislative sovereignty of the self-governing Dominions of the British Empire.
The 1931Statute of Westminster formalised the independence of Canada, Australia, New Zealand, the Irish Free State, South Africa and Newfoundland except in relation to revision of the acts of parliament upon which the constitutions of Canada, Australia and New Zealand were founded.
Adoption of the Statute was strongly opposed by conservatives in Australia, and it was not until 1942 that it was finally adopted to clarify Government war powers (the adoption was backdated to the start of World War II in September 1939).