Brazil have done this.
In total 204 countries participated in the 2012 London Olympics. It was a hugely successful games for the host nation Great Britain who achieved their highest number of gold medals since 1908.
Italy are one of Germany's allied since the invasion of Europe.
Brazil has participated in all World Cups since the start in 1930.
Belgium
Yes, they have since 1984.
They have won in 0 times since their first appearance in the world cup in 1987. The furthest they have reached is the quarter finals.
It is not clear who will be the champion of the World Cup since the tournament is in the quarter finals now where we have Brazil, Netherlands, Germany and Argentina to contest for the cup.
Five countries - Australia, France, Great Britain, Greece, and Switzerland - have been represented at all Summer Olympic Games. Greece is the only one to have participated under its own flag in all Games.France did not send a team to the 1904 games. One Frenchman competed, for the US and a mixed team.
43. They haven't even made the finals since they last won in 1967.
Jamaica first participated in the Summer Olympics in 1948 and has participated in every Summer Olympics since then.
Italy rejoined Eurovision in 2011. They participated in the 2011 and 2012 contests and will do so again in 2013. Before that, Italty had not participated since 1997.