Editing 1830 (section)

=== July–September ===
* [[July 5]] – French [[Invasion of Algiers in 1830|invasion of Algiers]], leading to creation of [[French Algeria]].
* [[July 13]] – The General Assembly's Institution (later the [[Scottish Church College]]), one of the pioneering institutions that ushers in the [[Bengali Renaissance]], is founded by [[Alexander Duff (missionary)|Alexander Duff]] and Raja [[Ram Mohan Roy]], in [[Calcutta]], India.
* [[July 17]] – [[Barthélemy Thimonnier]] is granted a French [[patent]] (#7454) for a [[sewing machine]]; it chains stitches at 200/minute.
* [[July 18]] – [[Uruguay]] adopts its first [[constitution]].
* [[July 20]] – Greece grants citizenship to [[Romaniote Jews]].
* [[July 26]] – The [[July Revolution]] in France begins when people in Paris rebel against the [[July Ordinances]], issued earlier in the day at Saint-Cloud by King [[Charles X of France]].
* [[July 27]] – "The Three Glorious Days" of the July Revolution in France begin. The Paris mob clashes with the National Guard: over the period 1,800 rioters and 300 soldiers will die.
* [[July 29]] – "The Three Glorious Days" of the [[July Revolution]] in France end with establishment of a provisional government in Paris.
* [[July 31]] – King Charles X of France flees to the [[Château de Rambouillet]].
* [[August 2]] – [[Charles X of France|King Charles X]] abdicates the throne in favor of his grandson [[Henri, Count of Chambord]], who never takes the throne.
* [[August 9]] – [[Louis Philippe I|Louis Philippe]], the "Citizen King", becomes King of the French.
* [[August 13]] – The [[Victor de Broglie (1785–1870)|Duc de Broglie]] is appointed [[Prime Minister of France]] by Louis Philippe.
* [[August 25]] – The [[Belgian Revolution]] begins in Brussels with revolts against King [[William I of the Netherlands]].
* [[August 31]] – [[Edwin Beard Budding]] is granted an English patent for the invention of the [[lawn mower]].
* [[September 15]] – The [[opening of the Liverpool and Manchester Railway]], the world's first intercity passenger railway operated solely by [[steam locomotive]]s, takes place in England, UK.
* [[September 26]] – [[Belgian Revolution]]: The army of the [[United Kingdom of the Netherlands]] fails to retake [[Brussels]], a National Congress is summoned to draw up a Constitution and a [[Provisional Government of Belgium]] is established under [[Charles Latour Rogier]].