Context: On the 1st of January 1901 the nation-state of Australia officially came into existence as a federation. The Australian continent was colonised by the United Kingdom in 1788, which subsequently established six, eventually self-governing, colonies there. In the 1890s the governments of these colonies all held referendums on becoming a unified, self-governing "Commonwealth" within the British Empire. When all the colonies voted in favour of federation, the Federation of Australia commenced, resulting in the establishment of the Commonwealth of Australia in 1901. The model of Australian federalism adheres closely to the original model of the United States of America, although it does so through a parliamentary Westminster system rather than a presidential system.

Question: What happened on January 1st 1901?
Answer: nation-state of Australia officially came into existence as a federation

Question: When did the United Kingdom colonized the Australian continent?
Answer: 1788

Question: Which model is of federalism is similar to the federalism model in Australia? 
Answer: United States of America

Question: What was established when Australia was colonized? 
Answer: six, eventually self-governing, colonies

Question: What happened on January 21st 1901?
Answer: Unanswerable

Question: When did the United Kingdom leave the Australian continent?
Answer: Unanswerable

Question: When didn't the United Kingdom colonize the Australian continent?
Answer: Unanswerable

Question: Which model is of federalism is opposite to the federalism model in Australia? 
Answer: Unanswerable

Question: What was abolished when Australia was colonized? 
Answer: Unanswerable