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American President Woodrow Wilson (3/4/1913-3/4/1921) Argentine President Victorino de la Plaza (8/9/1914-10/12/1916) Australian Prime Minister Billy Hughes (10/27/1915-11/14/1916) Belgian Prime Minister Charles de Broqueville (6/17/1911-6/1/1918) Brazilian President Venceslau Brás (11/15/1914-11/14/1918) British Prime Minister H H Asquith (4/5/1908-12/5/1916) Canadian Prime Minister Robert Borden (10/10/1911-7/10/1920) Japanese Prime Minister Okuma Shigenobu (4/16/1914-10/9/1916)