FIFA World Cup 2010 (answers) - The history

The History
What's the balls name of world cup 2010 ?
"JABULANI" is the name of thye FIFA World Cup ball 2010. The Balls name Jubulani means “to celebrate’’ in IsiZulu features a South African inspired design and radically new technology. 

Why was it held in 1942 and 1946 ?
The championship has been awarded every four years since the inaugural tournament in 1930, except in 1942 and 1946 when it was not held because of the Second World War.

What's the top 3 winners of the worldcup since 1930? 
-Brazil
-Italy (1990)
-Germany (2006)
Where was the world cup held in 2010?
FIFA Wold Cup 2010 was held in South Africa, Johannesburg. The big sports event started 11th june and ended 11th july. 
Who devolopes the ball since 1970?
Since 1970 Adidas have been making balls for FIFA football and others events like Europe Cup.