King Albert I (ruler of BELGIUM since 1909-12-23) | Reichpresident Paul von Hindenburg (ruler of GERMANY since 1925-05-12) | King Alfonso XII (ruler of SPAIN since 1900-01-01) | Frederic Francois-Marsal (ruler of FRANCE since 1924-06-11) | King Victor Emmanuel III (ruler of ITALY since 1900-07-29) | Emperor Hirohito (ruler of JAPAN since 1926-12-25) | President Emilio Portes Gil (ruler of MEXICO since 1928-12-01) | Queen Wilhelmina (ruler of NETHERLANDS since 1900-01-01) | President Oscar Carmona (ruler of PORTUGAL since 1926-07-09) | Chiang Kai-Shek (ruler of CHINA since 1928-10-10) | King George V (ruler of UNITED KINGDOM since 1910-05-06) | President Herbert Hoover (ruler of AMERICA since 1929-03-04) |