False position method Moroccan origin. Leonardo of Pisa (Fibonacci) devoted Chapter 13 of his book "Liber Abaci" (AD 1202) to explaining and demonstrating the uses of double false position, terming the method "regulis elchatayn" after the "al-khaṭāʾayn" method that he had learned from Arab sources. In 1494, Pacioli used the term "el cataym" in his book "Summa de arithmetica", probably taking the term from Fibonacci. Other European writers would follow Pacioli and sometimes provided a translation into Latin or the vernacular. For instance, Tartaglia translates the latinized version of Pacioli's term into the vernacular "false positions" in 1556. Pacioli's term nearly disappeared in
History of soccer in the United States 1924 when USFA created the National Amateur Cup. That spelled the death knell for the American Cup. It played its last season in 1924. Towards the end of the 1920s, a period in American soccer known as the "American Soccer Wars" ignited. The Soccer Wars regarded the internal conflicts with the American Soccer League and their affiliated clubs participating in the National Challenge Cup. The debate involved whether the United States Football Association or the American Soccer League was the true chief organization of American soccer at the time, and consequently wrecked the reputation and possibly even the popularity of