Yes, Australia won the rugby union world cup in 1991 and 1999.
In 1987 co hosted by New Zealand and Australia
They are in Pool C along with Australia, Ireland, Italy and USA
As of 2014, Ireland has never won the Rugby Union World Cup.
rugby union is the world cup, the six nations, the european nations cup... rugby union is what people know as rugby. all other forms of rugby are not as popular.
The final score was; England 20 Australia 17.
Its Called "The World In Union"
"One can learn about the Rugby World by attending the Rugby World Cup. The Rugby World Cup is the international rugby union competition, where the teams are competing to win the William Webb Ellis Cup."