No African team has ever made it past the quarter-finals, so these teams will be hoping to make history in 2018:

Making their sixth appearance in the 2018 tournament, the Super Eagles are arguably Africa's best chance of winning a World Cup — they come into the tournament as one the toughest sides in it and can be considered the dark horses. The last, and only, time that Spain and Portugal faced off in a World Cup match came in 2010, when Spain eliminated their rivals from the Round of 16 with a 1-0 win and went on to win the World Cup that year, as Sky Sports recounted.
Julen Lopetegui is ousted as coach of Spanish national football team, one day before the 2018 FIFA World Cup.