Advantage to the south American sides giving energetic performances due to having more air to breathe? Mexico & Peru showed great altitude.
They get less air to breathe at high altitude. Also Mexico isn't in South America. Other than that, good post.
1998: France win World Cup 2002: France fail to make it out of the group stages 2006: Italy win World Cup 2010: Italy fail to make it out of the group stages 2010: Spain win World Cup 2014: Spain fail to make it out of the group stages 2014: Germany win World Cup 2018: