The Brazilian Football League System is a hierarchical structure of football leagues in Brazil, consisting of multiple tiers. The top tier is the Campeonato Brasileiro Série A, followed by Série B, Série C, and Série D. Each year, teams compete for promotion to higher divisions or face relegation to lower ones based on their performance. The league system operates on a promotion and relegation basis, meaning that the best-performing teams in lower divisions can move up, while the lowest-performing teams in higher divisions can drop down. This system encourages competition and allows clubs from various regions to participate in national tournaments.