1924-Dec-30 Astronomer Edwin Hubble formally announced that the Milky Way is just one of many galaxies in the universe
1994-May-10 Nelson Mandela sworn in as the first black president of South Africa
1945-Dec-27 International Monetary Fund was formally established by 29 member countries
2018-Jun-12 The 2018 North Korea–United States Summit was held in Singapore
1917-Apr-02 President Woodrow Wilson asked Congress to declare war against Germany
1807-Aug-17 Innovation of the steamboat
1932-Dec-27 Radio City Music Hall opened in New York City
1999-Jan-01 The Euro became the official currency in 11 European countries
1974-Jan-02 President Richard Nixon signed the national speed limit into law
1973-Oct-20 Queen Elizabeth II opened the Sydney Opera House
1924-Jan-25 The first Winter Olympic Games opened in Chamonix, France
1835-Dec-29 The Treaty of New Echota was signed between the United States Government and representatives of a minority Cherokee Political Faction
1903-Nov-06 The USA recognized the independence of Panama
1949-Dec-27 Queen Juliana of the Netherlands signed the papers to grant independence to Indonesia
1959-Jan-01 Cuban dictator Fulgencio Batista ousted by Castro-led revolution