Answer
The answer is the Eredivisie, which is the top-tier professional football league in the Netherlands. Established in 1956, it consists of 18 clubs and operates on a system of promotion and relegation with the Eerste Divisie. Renowned for its competitive and entertaining style of play, the Eredivisie has produced legendary players and clubs, including Johan Cruyff, Marco van Basten, and Ajax Amsterdam, known for their "Total Football" philosophy.