Editing 1921 (section)

=== October ===
{{Main|October 1921}}
* [[3 October]] 
** [[Simko]], the leader of the [[Shekak (tribe)|Shikak tribe]], killed the Iranian commander [[Colonel]] [[Mohammad Taqi Pessian]] by having his head cut off in the [[Battle of Jafarabad (1921)]], which was the first incident of his [[Simko Shikak revolt (1918–1922)|rebellion]].{{citation needed|date=May 2025}}
* [[October 5]]
** The [[World Series]] baseball game in North America is first broadcast on the radio, by [[Newark, New Jersey]], station WJZ, [[Pittsburgh]] station KDKA, and a group of other commercial and amateur stations throughout the eastern United States.{{citation needed|date=May 2025}}
** [[Constitution of Liechtenstein]] granted by [[Johann II, Prince of Liechtenstein]], making the country a [[constitutional monarchy]].<ref>{{cite book|authorlink=Dieter Nohlen|last1=Nohlen|first1=D.|last2=Stöver|first2=P.|year=2010|title=Elections in Europe: A Data Handbook|pages=1156–8|publisher=Nomos |isbn=978-3-8329-5609-7}}</ref>
* [[October 7]]
**During his [[Simko Shikak revolt (1918-1922)|first rebellion]], [[Simko Shikak]] launched an attack on the Savujbulak district of [[Mahabad]] in 1921. With a force of approximately 3,900, he attacked the Gendarmes, killing 400 of them and looting the local population.{{citation needed|date=May 2025}}
* [[October 8]] &ndash; The first [[Sweetest Day]] is staged in [[Cleveland, Ohio]].{{citation needed|date=May 2025}}
* [[October 10]] &ndash; Teaching at the [[University of Szeged]] begins, in the [[Kingdom of Hungary]].{{citation needed|date=May 2025}}
* [[October 11]] &ndash; The [[Anglo-Irish Treaty#Negotiations|Irish Treaty Conference]] opens in London.<ref name="Cassell's Chronology">{{cite book|first=Hywel|last=Williams|title=Cassell's Chronology of World History|url=https://archive.org/details/cassellschronolo0000will/page/490|url-access=registration|location=London|publisher=Weidenfeld & Nicolson|year=2005|isbn=0-304-35730-8|pages=[https://archive.org/details/cassellschronolo0000will/page/490 490–491]}}</ref>
* [[October 13]]
** The [[Treaty of Kars]] is signed between the [[Government of the Grand National Assembly]] of Turkey and the [[Armenian Soviet Socialist Republic|Armenian]], [[Azerbaijan Soviet Socialist Republic|Azerbaijani]] and [[Georgian Soviet Socialist Republic|Georgian]] [[Republics of the Soviet Union|Socialist Soviet Republics]] in [[Transcaucasia]], establishing common boundaries.<ref>{{cite book|first=H. B.|last=Paksoy|title=Essays on Central Asia|url=https://books.google.com/books?id=vNRcQnlkQLgC&pg=PA286|publisher=Carrie/EUI|year=1999|pages=286}}</ref>
** Swedish Social Democratic party leader [[Hjalmar Branting]] becomes yet again Prime Minister, after strong general election gains for his party.{{citation needed|date=May 2025}}
* [[October 19]] &ndash; '[[Bloody Night]]' (''Noite Sangrenta''): A massacre in [[Lisbon]] claims the lives of Portuguese Prime-Minister [[António Granjo]] and other politicians.{{citation needed|date=May 2025}}
* [[October 20]] &ndash; [[Treaty of Ankara (1921)|Treaty of Ankara]] signed between the [[French Third Republic]] and the [[Government of the Grand National Assembly]] of Turkey, ending the [[Franco-Turkish War]].{{citation needed|date=May 2025}}
* [[October 21]] &ndash; [[George Melford]]'s wildly successful silent film ''[[The Sheik (film)|The Sheik]]'', which will propel its leading actor [[Rudolph Valentino]] to international stardom, premieres in Los Angeles.{{citation needed|date=May 2025}}
* [[October 24]] &ndash; In the continuing [[Rif War]], the Spanish Army defeats rifkabyl rebels in [[Morocco]].{{citation needed|date=May 2025}}
* [[October 29]] &ndash; In the United States:
** Construction of the [[Link River Dam]], a part of the [[Klamath Project]] in [[Oregon]], is completed.<ref>{{cite book|first=Eric A. |last=Stene|title=The Klamath Project|url=https://books.google.com/books?id=cE7gqsKqLb0C&pg=PA20|year=1994|publisher=Bureau of Reclamation History Program|pages=20}}</ref>
** [[Centre College]]'s [[American football]] team, led by quarterback [[Bo McMillin]], defeats [[Harvard Crimson football|Harvard University]] 6–0, to break Harvard's five-year winning streak. For decades afterward, this is called "football's upset of the century."{{citation needed|date=May 2025}}