Zero times
England won 1st semifinal against Sri Lenka of T20 world cup 2010 and qualified 1st time in finals Australia and England will be seen in Finals.
This is the first time that Spain has reached world cup finals.
5 times
Just the one: they are the defending champions, having won it in 2010.
2010 marks the third time that Australia has been in the World Cup.
Romania have been in 7 world cups. Their best result was in 1994, making it to the quarter-finals.
I doubt very much if Cuba ever did qualify for a world cup.
four times
If your talking union then its simple, every time as Australia is a founder of the RWC
LeBron James' first time in the finals was in 2007.
Senegal reached the World Cup finals for their first and so far only time in 2002, where they reached the quarter-finals before being knocked out by Turkey.
Mexio has reached the quarter finals ion two occasions in 1970 and 1986. They were hosts in 1970 but lost to Italy 4-1 in the quarter finals. In 1986 Mexico hosted the World Cup again reaching the quarter finals for the second time but losing to Germany on penalties.