A league system is a hierarchical structure used in sports, particularly in football (soccer), where teams compete in various divisions or tiers. Each division consists of multiple teams that play against each other, earning points based on their performance in matches. The teams that perform well can be promoted to a higher division, while those that do poorly may be relegated to a lower one. This system allows for a competitive balance and provides opportunities for teams of different skill levels to compete. It also creates excitement for fans, as they follow their teams' journeys through promotion and relegation, making every match significant in the context of the league.