New South Wales is Australia's most populous state: about 31 percent of all Australians live in the state. But, remarkably, more than 63 percent of Australian Prime Ministers were born in the state. Here are the details of the four Prime Ministers in the answer options:

John Howard, born 26 July 1939 Earlwood, New South Wales

Julia Gillard, born 29 September 1961 Barry, South Wales

Malcolm Turnbull, born 24 October 1954 Sydney, New South Wales

Scott Morrison, born 13 May 1968 Waverley, New South Wales

So, Julia Gillard was not born in New South Wales, but in South Wales; South Wales is, of course, not in Australia but in the UK. Her family migrated to Adelaide in South Australia in 1966. She is a lawyer who graduated from University of Melbourne in the 1980s. She held dual UK and Australian citizenship until her entry into the Australian parliament in 1998. She was Prime Minister and leader of the Labor Party from June 2010 to June 2013.

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