Major Events
- 301 San Marino, one of the smallest nations in the world and the world’s oldest republic still in existence, is founded by Saint Marinus
- 1650 Oliver Cromwell‘s English New Model Army defeats a Scottish force in a surprise attack at the Battle of Dunbar
- 1783 The Treaty of Paris is signed in Paris, ending the American Revolutionary War between Great Britain and the United States of America
- 1791 The new French Constitution, declaring France a constitutional monarchy, is passed by the National Assembly during the French Revolution
- 1900 With a proclamation by General Lord Roberts, Britain annexes the Boer Republic of South Africa
- 1939 World War II: Britain declares war on Germany after the invasion of Poland; France follows six hours later, quickly joined by Australia, New Zealand, South Africa, and Canada
- 1944 Holocaust diarist Anne Frank is sent to Auschwitz concentration camp [1]
- 1967 Sweden begins driving on the right-hand side of the road (Dagen H)
- 1988 An estimated 50,000 Kurdish civilians and soldiers are killed by Iraq by this date, many using chemical weapons, in the aftermath of the Iran-Iraq War
Sep 3 in Film & TV
- 1951 TV soap opera “Search for Tomorrow” debuts on CBS
Sep 3 in Music
- 1912 Arnold Schoenberg‘s “Fünf Orchesterstücke” (Five Pieces for Orchestra) premieres in London at a Promenade Concert
Sep 3 in Sport
- 1950 Giuseppe “Nino” Farina wins the inaugural Formula 1 World Drivers’ Championship by winning the Italian Grand Prix at Monza in an Alfa Romeo, finishing three points ahead of Juan Manuel Fangio
Did You Know?
The flag of the United States flies in battle for the first time at Cooch’s Bridge, Delaware, during a skirmish in the American Revolutionary War

Fun Fact About September 3
Britain and the British Empire (including the American colonies) adopt the Gregorian Calendar, losing 11 days; people riot, thinking the government has stolen 11 days of their lives
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