1895 German physicist Wilhelm Conrad Röntgen discovered X-Rays

1932 Radio City Music Hall opened in New York City

1964 Kenya became a republic

1924 Astronomer Edwin Hubble formally announced that the Milky Way is just one of many galaxies in the universe

1949 Queen Juliana of the Netherlands signed the papers to grant independence to Indonesia

2002 The Legislative Assembly appointed Eduardo Duhalde as interim President of Argentina

1836 Spain recognized the independence of Mexico by signing the Santa María–Calatrava Treaty

1963 President John F. Kennedy signed the United States Equal Pay Act into law

1901 Guglielmo Marconi sent and received the first wireless message across the Atlantic Ocean

1804 Haiti declared its independence from France

1945 International Monetary Fund was formally established by 29 member countries

1993 Czechoslovakia was divided into two independent states

1956 Dutch swimmer Cockie Gastelaars broke two decades' world record for 100m freestyle

1835 The Treaty of New Echota was signed between the United States Government and representatives of a minority Cherokee Political Faction

1917 President Woodrow Wilson asked Congress to declare war against Germany