Why did the British parliament have to legislate on our Constitution?
Although the Australian Constitution was drafted by Australians for Australia, it had to be presented to the British Parliament for approval because, even though each State colony have a measure of independence, control was still exercised from London. Furthermore, the draft constitution was the first of its kind in Australia as its intent was to create a new country.
The draft constitution was therefore incorporated as a schedule of an act of the Parliament of the United Kingdom called the Commonwealth of Australia Constitution Act 1900. This act was given royal assent on 9 July 1900 and was proclaimed on 17 September 1900. It entered into force on 1 January 1901.