Federation was a unique achievement:
Federation was thus the sixth pillar of the nation.
The Federal Constitution has since served us well, allowing Australia to enjoy peaceful limited government, in peace and in war, in prosperity and in depression.
Under it the nation has evolved peacefully from being a self governing Dominion within the British Empire, to full independence as a Realm within the Commonwealth.
The Federation was based on the new entity being an indissoluble Federal Commonwealth under the Crown.
This is the fundamental nature of the federal structure of the nation : it is an indissoluble Federal Commonwealth under the Crown.
There have always been those who want to remove the Crown, but they were not elected to the nineteenth century conventions.
For almost all of the first century of federation, nol Australian leader had questioned the place of the Crown in our constitutional system.