The United Kingdom
There is no Independence Party in Australia.
Australia does not have a Declaration of Independence, as its path to independence was quite different to that of the United States. See the related question.
Australia did not acquire its independence from the US. The US has never had any claim to any part of Australia. Both countries were initially colonised by Britain, and each, in turn, acquired its independence from Britain.
Australia gained independence from Britain through a gradual process rather than a single event. Key milestones included the Federation in 1901, which united the six colonies into the Commonwealth of Australia, and the Statute of Westminster in 1931, which granted legislative independence. Finally, the passage of the Australia Act in 1986 removed the remaining constitutional ties to the UK, solidifying Australia's status as a fully sovereign nation.
Nothing
1917
peacefully (:
Australia obtained its national independence in January 1, 1901.
Independence Day is a different date for each country. For example, in the United States, Independence Day is July 4th, but independence is recognized in Australia on January 26th and is called "Australia Day" or "Anniversary Day".
The British Empire.
Great Britain
Prior to Papua New Guinea's independence in 1975, it was administered by Australia.