Hosts of the First Football World Cup in 1930.
Champions of the First World Cup beating Argentina 4-2(seemingly setting the pressidence of teams winning on home soil)
Champions again in Brazil 1950 (the 4th cup) which was the only cup to not have a final. <font size=small>(There was no official World Cup final match in 1950. The tournament winner was decided by a final round-robin group contested by four teams (Uruguay, Brazil, Sweden, and Spain). However, Uruguay's 2-1 victory over Brazil (a match known as Maracanazo) was the decisive match (and also coincidentally one of the last two matches of the tournament) which put them ahead on points and ensured that they finished top of the group as world champions. Therefore, this match is often considered the "final" of the 1950 World Cup)</font>