FIFA
In total, FIFA recognises 211 national associations and their associated men's national teams as well as 129 women's national teams; see the list of national football teams and their respective country codes. FIFA has more member states than the UN as FIFA recognises 23 non-sovereign entities as distinct nations, such as the four Home Nations within the United Kingdom and politically disputed territories such as Palestine.
FIFA World Cup
In the tournaments between 1934 and 1978, 16 teams competed in each tournament, except in 1938, when Austria was absorbed into Germany after qualifying, leaving the tournament with 15 teams, and in 1950, when India, Scotland, and Turkey withdrew, leaving the tournament with 13 teams. Most of the participating nations were from Europe and South America, with a small minority from North America, Africa, Asia, and Oceania. These teams were usually defeated easily by the European and South American teams. Until 1982, the only teams from outside Europe and South America to advance out of the first round were: USA, semi-finalists in 1930; Cuba, quarter-finalists in 1938; North Korea, quarter-finalists in 1966; and Mexico, quarter-finalists in 1970.