European leagues refer to the various professional football competitions held across Europe. The most prominent leagues include the English Premier League, La Liga in Spain, Bundesliga in Germany, and Serie A in Italy. These leagues feature top clubs and attract some of the best players in the world, making them highly competitive and popular among fans. Each league operates on a system of promotion and relegation, where the best-performing teams move up to higher divisions, while the lowest-ranked teams drop to lower ones. Additionally, many leagues participate in international competitions, such as the UEFA Champions League, showcasing the best teams from different countries.