Rules of the Game: Coaches and other officials must remain within the confines of the technical area except in special circumstances, for example, a trainer or doctor entering the field of play, with the referee’s permission, to assess an injured player.
Rules of the Game: For international matches the field of play must have dimensions of: Length: minimum 100 m (110 yds), maximum 110 m (120 yds); Width: minimum 64 m (70 yds), maximum 75 m (80 yds).
Unlike the Olympics, FIFA recognizes the four Home Nations of the United Kingdom - England, Scotland, Wales and Northern Ireland- as separate entities.
The 1970 and 1986 World Cups were held in Mexico.
Substitutions were allowed for the first time in the 1970 World Cup.
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