Australia secured its fourth consecutive World Cup title by defeating New Zealand 32-12 in Brisbane on Sunday night.
The Kangaroos have now won 10 of the past 11 tournaments, dating back to 1975.
New Zealand had been tipped to push Australia after a two-point loss in the tournament opener, as it pursued its first title since 2008.
Instead, Reece Walsh repeatedly unsettled the Kiwis from fullback, helping create two tries with his pace and footwork.
New Zealand's Kalyn Ponga, named International Rugby League's Golden Boot winner on Thursday, could not make an impact.
Australia's Harry Grant, Tom Dearden and Cameron Munster outplayed their error-prone counterparts, while the Kangaroos' forwards dominated physically.
Dearden set up Liam Martin's two first-half tries with short passes, and Bradman Best scored after chasing down and tackling Jahrome Hughes.
Tom Trbojevic's try at the start of the second half made it 28-6.
Jack Bostock marked his breakout season with a try in each half.