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
1767-Dec-28 King Taksin was crowned King of Thailand (Siam)
1945-Oct-24 The United Nations was officially established
1808-Jan-01 The slave trade became illegal when the United States enacted a law banning the importation of slaves
1807-Aug-17 Innovation of the steamboat
2018-Jun-18 WHO officially announced it will categorize gaming addiction as a mental health condition
1836-Dec-28 Spain recognized the independence of Mexico by signing the Santa María–Calatrava Treaty
1964-Dec-12 Kenya became a republic
1991-Jul-10 Boris Yeltsin was sworn in as the first elected President of Russia
1903-Nov-06 The USA recognized the independence of Panama
2018-Jun-12 The 2018 North Korea–United States Summit was held in Singapore
1964-Jun-12 Nelson Mandela was sentenced to life in prison
1956-Mar-03 Dutch swimmer Cockie Gastelaars broke two decades' world record for 100m freestyle