 Complete the following phrase:  In 1908, Milan experienced a split caused by internal disagreements over the signing of foreign players, which led to the forming of another Milan-based team, F.C. Internazionale Milano. Following these events, Milan did not manage to win a single domestic title until 195051. The 1950s saw the club return to the top of Italian football, headed by the famous Gre-No-Li Swedish trio Gunnar Gren, Gunnar Nordahl and Nils Liedholm. This was one of the clubs most successful periods domestically, with the Scudetto going to Milan in 1951, 1955, 1957, 1959 and 