Sept. 6 (UPI) -- On this date in history: In 1522, one of Ferdinand Magellan's five ships -- the Vittoria -- arrived at Sanlucar de Barrameda in Spain, completing the first circumnavigation of the world. In 1620, 149 Pilgrims set sail from England aboard the Mayflower, bound for the New World. In 1901, U.S. President William McKinley was shot by an anarchist at the Pan American Exposition in Buffalo, N.Y. McKinley died eight days later. In 1909, word was received that U.S. Navy Adm. Robert