Editing 1831 (section)

=== July&ndash;September ===
* [[July 13]] &ndash; [[Russian Empire|Russian imperial]] officials in [[Wallachia]] adopt ''[[Regulamentul Organic]]'', introducing a period of unprecedented reforms that provide for Westernization of this region of Romania.
* [[July 15]] &ndash; The volcanic [[Graham Island (Mediterranean Sea)|Graham Island]] briefly emerges in the [[Mediterranean]].
* [[July 21]] &ndash; [[Leopold I of Belgium|Leopold of Saxe-Coburg-Gotha]] is inaugurated as the first King of the [[Belgium|Belgians]], in [[Brussels]].
* [[August 2]] &ndash; The [[United Kingdom of the Netherlands|Dutch]] [[Ten Days' Campaign]] against Belgium is halted by a [[July Monarchy|French]] army.
* [[August 7]] &ndash; American [[Baptist]] minister [[William Miller (preacher)|William Miller]] preaches his first sermon on the Second Advent of Christ in Dresden, New York, launching the Advent Movement in the United States.
* [[August 21]] &ndash; [[Nat Turner's slave rebellion]] in the [[United States]] breaks out in [[Southampton County, Virginia]].
* [[August 29]] &ndash; [[Michael Faraday]] demonstrates [[electromagnetic induction]] at the [[Royal Society]] of London.<ref>{{cite web|url=http://www.icons.org.uk/theicons/icons-timeline/1820-1840|title=Icons, a portrait of England 1820–1840|access-date=2007-09-12|archive-url=https://web.archive.org/web/20070922055840/http://www.icons.org.uk/theicons/icons-timeline/1820-1840|archive-date=2007-09-22|url-status=dead}}</ref> [[Joseph Henry]] recognises it at about the same time.
* [[September 8]]&ndash; [[Battle of Warsaw (1831)|Battle of Warsaw]]: The Army of [[Russia]] takes the [[Warsaw|Polish capital]] after a two-day battle to crush the Polish uprising.
* [[September 8]] &ndash; Coronation of King [[William IV of the United Kingdom]] (he will reign until [[1837]]).
* [[September 22]] &ndash; The [[House of Commons of the United Kingdom]] passes the [[Great Reform Bill]] to expand the franchise, but this is later defeated in the [[House of Lords]].
* [[September 28]]&ndash; The first national [[president (government title)|president]]ial nominating convention in the [[United States]] concludes after three days as the [[Anti-Masonic Party]] selects its nominee for President in [[Baltimore, Maryland]].