The Dominion of New Zealand was the historical successor to the Colony of New Zealand. It was a constitutional monarchy with a high level of self-government within the British Empire.
New Zealand became a separate British Crown colony in 1841 and received responsible government with the Constitution Act in 1852. New Zealand chose not to take part in the Federation of Australia and became the Dominion of New Zealand on 26 September 1907, Dominion Day, by proclamation of King Edward VII. Dominion status was a public mark of the political independence that had evolved over half a century through responsible government.
Just under one million people lived in New Zealand in 1907 and cities such as Auckland and Wellington were growing rapidly.