Editing 1973 (section)

===September===
{{main|September 1973}}
[[File:Golpe_de_Estado_1973.jpg|thumb|[[La Moneda Palace]] being bombed amidst heavy fighting between government forces and the Chilean Military [[1973 Chilean coup d'état|who was staging a coup]], on September 11th.]]
* [[September 9]] – Scottish racing driver [[Jackie Stewart]] becomes [[List of Formula One World Drivers' Champions|World Drivers' Champion]] when his [[Tyrrell Racing|Tyrrell]] [[Tyrrell 003|003]]-[[Cosworth]] finishes fourth in the [[1973 Italian Grand Prix]] at [[Autodromo Nazionale Monza|Monza]].
* [[September 11]] – [[Chile]]'s democratically elected government is overthrown in [[1973 Chilean coup d'état|a violent military coup]] after serious political instability. President [[Salvador Allende]] allegedly [[Death of Salvador Allende|commits suicide]] during the coup in the [[La Moneda Palace|presidential palace]] and General [[Augusto Pinochet]] heads a US-backed [[military junta]] that governs Chile for the next 17 years.
* [[September 15]] – [[Carl XVI Gustaf of Sweden|Carl XVI Gustaf]], becomes King of Sweden following the death of his grandfather, [[Gustaf VI Adolf of Sweden|King Gustaf VI Adolf]].
* [[September 18]] – The two German Republics, the [[West Germany|Federal Republic of Germany]] (West Germany) and the [[German Democratic Republic]] (East Germany), are admitted to the [[United Nations]].
* [[September 20]]
** [[Billie Jean King]] beats [[Bobby Riggs]] in a singles tennis match billed as the "Battle of the Sexes".<ref>{{cite web |first=Neal |last=Amdur |title=Mrs. King Defeats Riggs, 6-4, 6-3, 6-3, Amid a Circus Atmosphere |url=https://www.nytimes.com/1973/09/21/archives/mrs-king-defeats-riggs-64-63-63-amid-a-circus-atmosphere-mrs-king.html |newspaper=The New York Times |date=September 21, 1973 |page=A1 |access-date=November 26, 2023}}</ref>
** [[Jim Croce]], [[Maury Muehleisen]] and four others are killed in a plane crash shortly after takeoff following a concert at Northwestern Louisiana University in Natchitoches.<ref>{{cite news |title=Recording star, 5 others killed in crash of plane |url=https://news.google.com/newspapers?id=py1OAAAAIBAJ&pg=5658%2C2870135 |newspaper=Spokesman-Review |location=Spokane, Washington |agency=The Associated Press |date=September 22, 1973 |page=9 |access-date=November 26, 2023 |via=newspapers.com}}</ref>
* [[September 27]] 
** [[Soviet space program]]: [[Soyuz 12]] ([[Vasily Lazarev]], [[Oleg Grigoryevich Makarov|Oleg Makarov]]), the first Soviet manned flight since the [[Soyuz 11]] tragedy in 1971, is launched.
** [[Luís Cabral]] declares the independence of the [[Republic of Guinea-Bissau]] from the [[Estado Novo (Portugal)|Estado Novo regime]] in [[Portugal]]. It is later granted in September 1974.