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

2003 The Spirit Rover was launched by NASA to start the Mars Exploration Rover mission

1945 The United Nations was officially established

1959 Cuban dictator Fulgencio Batista ousted by Castro-led revolution

1964 Kenya became a republic

1767 King Taksin was crowned King of Thailand (Siam)

1940 Winston Churchill became British Prime Minister, replacing Neville Chamberlain

1876 Innovation of the telephone

1965 United States President Lyndon B. Johnson signed the Voting Rights Act into law

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

1804 Haiti declared its independence from France

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

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

1807 Innovation of the steamboat

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

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

1974 President Richard Nixon signed the national speed limit into law