What league is Serie A in Europe? What are the integral rules for the quota allocation of countries participating in the European War?

Serie A is one of the five major leagues in Europe. Strictly speaking, Premier League, Serie A, La Liga, Bundesliga and Ligue 1 are all at the same level, and their league coefficient is 2. This determines the number of participants in the Champions League and the value of European golden boots. (For example, Dutch is the league coefficient of 1.5. So in the 2007/08 season, Huntelaar scored 33 goals and still lost to C Ronaldo's 3 1 goal. Four teams from five major leagues can directly enter the top 32 of the Champions League. At present, it is more fair that "the top two teams are directly shortlisted for next season's Champions League, and the third and fourth teams compete with other countries for Champions League tickets in two rounds. The Football Association is considering adopting the method of "the top six teams in the league play against each other" to determine the number of places in the Champions League, but that's all.