1994 Nelson Mandela sworn in as the first black president of South Africa

1940 Winston Churchill became British Prime Minister, replacing Neville Chamberlain

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

1895 German physicist Wilhelm Conrad Röntgen discovered X-Rays

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

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

1964 United States President Lyndon B. Johnson signed the Civil Rights Act into law

1997 The United Kingdom returned Hong Kong to the People's Republic of China

2018 WHO officially announced it will categorize gaming addiction as a mental health condition

1814 Innovation of the steam locomotive (engine)

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

1903 Innovation of the aeroplane

1990 Panamanian dictator Noriega surrendered to the United States

1876 Innovation of the telephone

1808 The slave trade became illegal when the United States enacted a law banning the importation of slaves

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