Nigeria and African teams won the majority of titles in the past because they cheated with player's age.
European, South American and Asian teams played with kids aged 17-18, while Nigeria, Ghana and Cameroon usually played with guys aged 25 and similar.
No wonder, on the other hand, that those teams rarely had any result on a senior level (since those players were already seniors...).
Also, this is why a lot of African players seem to decline extremely fast after their 30th birthday (because that is not their actual 30th birthday, but more like 36th already).
Also, since FIFA implemented a mandatory usage of Magnetic resonance imaging (to check the real age of players based on their bones), African teams aren't dominant anymore, plus a lot of teams removed like 10-20 players from their youth NT teams (because they knew that they would get caught).
https://en.wikipedia.org/wiki/Age_fraud_in_association_football