This was the only World Cup to not have qualifiers. This is because every FIFA member was invited to join the tournament. Most of the interest came from South America where seven nations entered. This was the most South American nations that had entered the World Cup throughout its history. Few European nations took part because of cost from travelling the Atlantic Ocean from Europe.
Group 1 was the only group to have four teams. They were Argentina, France, Chile and Mexico. Argentina won the group. This was because they won all three of their matches in the group, including a 6-3 win against Mexico. Guillermo Stábile scored 3 goals in that game. Chile finished 2nd, while France ended in 3rd.
Yugoslavia won Group 2. They won both of the matches in their group. They were the only European team to qualify. This was after they won 2-1 against likely winners Brazil in the first game. They beat Bolivia 4-0 in the second game to win the group. Brazil beat Bolivia in the final game by the same score.
In Group 3, the host nation (Uruguay) won both of their games to qualify for the knockout stage. After a one-goal win over Peru, they beat Romania in the last game of the group without giving away a goal. During that match, they scored with four different players in their 4-0 win. The other match in the group saw the smallest crowd at a World Cup with 2,459. The actual figure though is to be around 300 people.
Uruguay won the championship. Although there was no third place play off, the United States are recognized as coming in third place (and Yugoslavia in fourth place) as the United States had better results in the tournament overall.