1994 Nelson Mandela sworn in as the first black president of South Africa
1940 Winston Churchill became British Prime Minister, replacing Neville Chamberlain
2003 The Spirit Rover was launched by NASA to start the Mars Exploration Rover mission
1836 Spain recognized the independence of Mexico by signing the Santa María–Calatrava Treaty
1876 Innovation of the telephone
1814 Innovation of the steam locomotive (engine)
1807 Innovation of the steamboat
1926 John Logie Baird gave the first public demonstration of a live television system
1949 Queen Juliana of the Netherlands signed the papers to grant independence to Indonesia
1901 Guglielmo Marconi sent and received the first wireless message across the Atlantic Ocean
1963 President John F. Kennedy signed the United States Equal Pay Act into law
1895 German physicist Wilhelm Conrad Röntgen discovered X-Rays