which team did win in it?
Uruguay
1930 FIFA World Cup
 In the final, hosts and pre-tournament favourites Uruguay defeated Argentina 4–2 in front of a crowd of 68,346 people to become the first nation to win the World Cup.
soccer team that won the most world cups Brazil when was this competition started? 1930 how many teams were there then? Thirteen
wiki:5440691
1930 FIFA World Cup [SEP] Introduction
Only a few European teams chose to participate because of the difficulty of travelling to South America. The teams were divided into four groups, with the winner of each group progressing to the semi-finals. The first two World Cup matches took place simultaneously and were won by France and the United States, who defeated Mexico 4–1 and Belgium 3–0, respectively. Lucien Laurent of France scored the first goal in World Cup history, while that day United States goalkeeper Jimmy Douglas posted the first "clean sheet" in the tournament. Argentina, Uruguay, the United States and Yugoslavia each won their respective groups to qualify for the semi-finals.