Africa 2010

I’ve asked before but I think the question was thought to be sarcastic. There is a world cup of American Football and, not surprisingly the United States are the current world champions, having defeated Japan in the final. I am genuinely interested in knowing how many nations participated in the qualifying tournament.
All I know is that the final was played in Kawasaki, Japan on July 15th 2007 and that the USA won 23-20

There were 6 teams participating and the champion of the 2007 American Football World Cup, also called the IFAF World Championships, was the USA. It was held in Japan over the summer.