rucks, mauls, scrums lineouts
Possession means to have the ball.
Australia and New Zealand
The Bledisloe Cup is contested by the Australias rugby union team and New Zealands rugby union team.
no this has never happened
The Bledisloe cup is contested only between Australia and New Zealand in the Rugby Championship( formerly the Tri Nations)
Leicester 16 Leinster 19: Heineken Cup final 2009
This occurs when one team has possession of the ball and are moving toward the oppositions try line with intent to score. It can also occur when the team who does not have possession of the ball is close to the opponents try line. The team in possession has to defend that possession.
Throughout the game either one side or the other has possession of the ball. At the end of the game the referee calls "no side" to indicate that neither side has possession of the ball thereafter.
If the other team makes a mistake such as forward pass, knock-on or they kicked the ball away in rugby league the opposing team gains possession of the ball. It is the same in the union code but there are rucks, mauls, line-outs and scrums which can give the defending team opportunities to gain possession.
It was new Zealand and France - New Zealand won 8-7
It is contested annually by the national teams of England, Scotland, Ireland and Wales, Ireland in 2009 were the latest to win the competition
In a contested scrum the two teams try to push the other off the ball to gain possession. In an uncontested scrum no pushing is permitted. This rule is usually invoked when a player in the scrum has sustained an injury. In international rugby, this rule is very rarely used as the injured player would normally be substituted.