What is Rugby World Cup?
According to Wikipedia, The Rugby World Cup is a men's rugby union tournament contested every four years between the top international teams.
The tournament was first held in 1987, when the tournament was co-hosted by New Zealand and Australia.
New Zealandis the current champions, having defeated 4 Australia in the final of the 2015 tournamentinEngland.
The winners are awarded the William Webb Ellis Cup, named after William Webb Ellis, the Rugby School pupil who —according to a popular legend — invented rugby by picking up the ball during a football game.
Four countries have won the trophy; New Zealand have won it three times, two teams have won twice, Australia and South Africa, while England have won it once.
The tournament is administered by World Rugby, the sport's international governing body. Sixteen teams were invited to participate in the inaugural tournament in 1987, however since 1999 twenty teams have taken part. Japan will host the next event in 2019. Dates: In 2019, Rugby World Cup will be hosted in Japan from September 29 to November 2 at 12 different locations throughout Japan.

Pool Division:
Pool Draw of the 2019 Rugby World Cup was held on May 10, 2017 in Kyoto and following are the team allocations:

Pool A:
Ireland, Scotland, Japan, Europe 1, Play-off winner
Pool B:
New Zealand, South Africa, Italy, Africa 1, Repechagewinner
Pool C:
England, France, Argentina, Americas 1, Oceania 2
Pool D: Australia, Wales, Georgia, Oceania 1, Americas 2

Venue Locations:
Rugby World Cup Japan 2019 will be held at the following 12locations throughout Japan: