Yes. Argentina won the 1978 FIFA World Cup and the 1986 FIFA World Cup.
Yes they have. They won the 2010 world cup
No Canada have never won the world cup.
No, Russia has never won a FIFA world cup.
Unfortunately Australia has not yet won the Fifa World Cup. The closest they have been is reaching the Quarterfinals in the 2006 Fifa World Cup.
The first world cup was won by Uruguay in 1930.
Spain have never won the FIFA World Cup.
No Paraguay have never won the world cup.