Editing 1839 (section)

=== July–September ===
[[File:Storming Column entering Fortress at Ghuznee.jpg|thumb|Lithograph depicting the [[July 23]] storming of the fortress during the [[Battle of Ghazni]].]]
* [[July 1]]
** Slaves aboard the ''[[United States v. The Amistad|Amistad]]'' rebel, and capture the ship.
** [[Abdülmecid I]] (1839–[[1861]]) succeeds [[Mahmud II]] ([[1808]]–1839) as [[Ottoman Emperor]].
* [[July 23]] – [[First Anglo-Afghan War]]: [[Battle of Ghazni]] – British forces capture the fortress city of [[Ghazni]] in [[Afghanistan]].
* [[August 8]] – The Fraternity of [[Beta Theta Pi]] is founded by John Reily Knox at Miami University.
* [[August 19]] – The French government gives the [[daguerreotype]] "for the whole world".
* [[August 31]] – The [[First Carlist War]] (Spain) ends with the [[Convenio de Vergara]], also known as the Abrazo de Vergara ("the embrace in Vergara"; Bergara in Basque), between liberal general [[Baldomero Espartero, Prince of Vergara|Baldomero Espartero, Count of Luchana]] and Carlist General Rafael Maroto.
* [[September 4]] – [[Battle of Kowloon]]: British vessels open fire on Chinese war [[Junk (ship)|junk]]s enforcing a food sales embargo on the British community in China in the first armed conflict of the [[First Opium War]].