The Brazilian Serie B, also known as the Campeonato Brasileiro Serie B, is the second-tier football league in Brazil. It was established in 1971 and has since become a highly competitive and popular competition. The league consists of 20 teams, with the top four teams earning promotion to the Serie A at the end of the season. Notable teams that have enjoyed success in Serie B include Palmeiras, Corinthians, and Vasco da Gama. An interesting fact about the league is that it has seen several teams achieve back-to-back promotions, showcasing the competitiveness and unpredictability of the competition.