So basically each part of the world has their own football federation. In Europe its Uefa. You as you know is concocaf. There is the south American one, the Asian one and so on.
Each of these federations is under FIFAs rule.
Each federation, depending on historic and current Co efficiency rules ( how you are rated world wide, where you finished the in the last tournament) get given the amount of places you are guaranteed in a World Cup finals.
The next WC has 48. But it will be a pre tournament before its whittled down. Its normally 32 in the finals. This one is fucked up because fifa are very very greedy and corrupt. Actually I think it's the USA one in 5 years that has 48. But anyway. Think of 32 spots.
Uefa has I believe 12 spots. Might be one more. South America has 5. Africa 4. Concocaf I think 3.and so on.
There are also play offs. ( you have to pre qualify for a wc) in the case of South America their sixth place team, currently Bolivia will play off against Oceania. So that's usually Australia. I think it might not be this time as they have an extra place. But anyway. That's how it works.
If Canada are third in the league they probably get to play off against an Iran type team.
Does that answer your question?
