Australian Citizenship Practice Exam 2025 - Free Citizenship Practice Questions and Study Guide

Australia became a Commonwealth in 1901 when the Federation of Australia took place. This significant event marked the unification of the six separate British colonies—New South Wales, Victoria, Queensland, South Australia, Western Australia, and Tasmania—into a single nation. The Constitution of Australia came into effect on January 1, 1901, establishing the Commonwealth of Australia as a federal state, officially recognized under the British Empire. This event is a cornerstone in Australian history, representing the birth of Australia's national identity and government structure.

Choosing any other year does not align with the actual date of Federation. For example, 1899 was a preparatory year leading up to the Federation, with discussions and conventions taking place, but it was not the year of the actual formation of the Commonwealth. Likewise, 1905 and 1910 occurred after the establishment and reflect other events in Australian history, rather than the founding moment of Australia as a unified nation.