October 3rd

1995
OJ Simpson acquitted in the killings of Nicole Brown Simpson and Ronald Lyle Goldman. The former football player had been accused of murdering his ex-wife and her friend on June 13, 1994. The high profile case and the subsequent trial of Simpson captured widespread media and public attention in the United States and around the world.
O. J. Simpson murder case
1990
East Germany and West Germany united to become Germany, 45 years after being split into two countries at the end of World War II.
History of Germany (1945–90)
1974
Frank Robinson was named the first African-American manager in major league baseball.
Frank Robinson
1955
Captain Kangaroo and The Mickey Mouse Club premiered on television.
1955 in television
1952
UK tests its first atomic bomb. Called Operation Hurricane the test was conducted near the Montebello Islands in Western Australia. The operation made the UK the third country to have nuclear weapons, the United States and the Soviet Union were the first two.
Operation Hurricane
1932
Iraq gains independence from the United Kingdom. The West Asian country came under British control in 1920, after the end of the First World War. After taking control of the country, the British installed the deposed Syrian King Faisal I as the King of Iraq.
Kingdom of Iraq
1929
The Kingdom of Serbs, Croats, and Slovenes formally changed its name to the Kingdom of Yugoslavia.
Kingdom of Yugoslavia
1922
Rebecca L. Felton became the first woman U.S. Senator when she was appointed to serve out the term of Senator Thomas E. Watson.
Rebecca Latimer Felton
1863
National Thanksgiving Day proclamation. American president Abraham Lincoln proclaimed the last Thursday of November as Thanksgiving Day. The holiday has been celebrated annually since that year.
Thanksgiving (United States)
1849
Edgar Allen Poe seen in public for the last time. The Baltimore, Maryland-based American poet and author, best known for his poem The Raven was found sick and delirious on the streets and taken to Washington College Hospital, where he died a few days later. He was 40 years old at the time of his death.
Death of Edgar Allan Poe
1283
Dafydd ap Gruffydd, Prince of Gwynedd, Wales, becomes the first person executed by being hanged, drawn and quartered.
Dafydd ap Gruffydd
1226
St. Francis of Assisi, founder of the Franciscan order, died.
St. Francis of Assisi