The Brazilian Football Leagues consist of several tiers, with the top division being the Campeonato Brasileiro Série A. This league features 20 teams competing annually, and the season runs from May to December. The bottom teams face relegation to the lower division, while the top teams qualify for international competitions like the Copa Libertadores. Below Série A, there are several divisions, including Série B, Série C, and Série D. Each division has its own promotion and relegation system, allowing teams to move up or down based on their performance. The leagues are known for their passionate fans and competitive matches.