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

1767 King Taksin was crowned King of Thailand (Siam)

1804 Haiti declared its independence from France

1926 John Logie Baird gave the first public demonstration of a live television system

1895 German physicist Wilhelm Conrad Röntgen discovered X-Rays

1921 The Communist Party of China (CPC) was formed, and Chen Duxiu was elected its leader

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

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

1964 Kenya became a republic

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

1940 Winston Churchill became British Prime Minister, replacing Neville Chamberlain

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

1807 Innovation of the steamboat

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