Similar to the Campeonato Brasileiro, teams from the lower series, like B and C, is often promoted to the top division yearly. In the situation of Italy, only the best 3 groups in Serie B are promoted to Serie A (in Brazil, promotion occurs for 4 groups in Serie B). https://tylekeonhacai68902.oblogation.com/36616451/the-2-minute-rule-for-what-is-serie-a