Lets go with Stats , Out of all World Nations :
World Cup Winners in History : 11 Europe and 9 South America
Finalist in History : 26 Europe and 14 South America
Semi Finalists in History : 1 Asia , 1 ConcaCAF , 22 South America , 56 Europe
Quarter Final : 2 Asia , 3 Africa , 5 ConcaCAF , 32 South America , 94 Europe
Round 16 : 5 Asia , 9 Africa , 13 ConcaCAF , 1 Oceania , 31 South America , 81 Europe
Now lets see how many times non-World Cup winner European teams who reached the semi Finals : 26 Times , Compared to 1 Asia and 1 ConcaCAF and 0 Africa
When Cameron reached the Quarter Finals in 1990 , Africa's seats rose to 3 in 1994 from 2 in 1990 , When South Korea reached the Semi Finals in 2002 , Asia's seats Rose from 3.5 in 2002 to 4.5 in 2006 , ConcaCAF seats Rose from 3 in 2002 to 3.5 in 2006 when USA reached the Quarter Final in 2002 , As you can see , Results are the way to raise each continent seats , Not popularity or population or number of nations