Editing 1786 (section)

=== July&ndash;September ===
* [[July 14]] &ndash; [[Convention of London (1786)|Convention of London]] between the [[Kingdom of Great Britain]] and the [[Kingdom of Spain]]: British settlements on the [[Mosquito Coast]] of Central America are to be evacuated; Spain expands the territory available to the British in [[Belize]] on the [[Yucatán Peninsula]], for cutting [[mahogany]].
* [[July 31]] &ndash; The '[[Kilmarnock volume]]' of [[Robert Burns]]' ''Poems, Chiefly in the Scottish Dialect'' is published in [[Scotland]].<ref>{{cite book |title=Poems, Chiefly in the Scottish Dialect  |last=Burns   |first=Robert |year= 1786 |publisher= Printed for John Wilson |location=Kilmarnock |isbn=9780665395598 |edition= First |url=https://archive.org/details/cihm_39559  |access-date=26 January 2016}} via Internet Archive</ref> 
* [[August]]
** [[James Rumsey]] tests his first [[steamboat]] on the [[Potomac River]], at [[Shepherdstown, West Virginia|Shepherdstown, Virginia]].
** The [[Cabinet of the United Kingdom|Cabinet of Great Britain]] approves the establishment of a [[penal colony]], at [[Botany Bay]] in Australia.
* [[August 1]] &ndash; [[Caroline Herschel]] discovers a [[comet]] (the first discovered by a woman) from England.
* [[August 8]] &ndash; [[Mont Blanc]] is climbed for the first time, by [[Michel-Gabriel Paccard]] and [[Jacques Balmat]].
* [[August 11]] &ndash; Captain [[Francis Light]] acquires the island of [[Penang]] from the Sultan of [[Kedah]] on behalf of the [[British East India Company]], renaming it ''Prince of Wales Island'' in honour of the [[George IV of the United Kingdom|heir to the British throne]],<ref name="Cassell's Chronology339">{{cite book|last=Williams|first=Hywel|title=Cassell's Chronology of World History|url=https://archive.org/details/cassellschronolo0000will/page/339|url-access=registration|location=London|publisher=Weidenfeld & Nicolson|year=2005|isbn=0-304-35730-8|page=[https://archive.org/details/cassellschronolo0000will/page/339 339]}}</ref> and establishing the settlement of [[George Town, Penang|George Town]]. This is the first [[colony]] of the [[British Empire]] in Southeast Asia.
* [[August 17]] &ndash; [[Frederick William II of Prussia|Frederick William]], the paternal nephew of Frederick the Great, becomes King of Prussia as Frederick William II.
* [[August 18]] &ndash; The Kingdom of [[Denmark]] (including [[Norway]]) charters six settlements in [[Iceland]] to trade with it, thus ending the [[Danish–Icelandic Trade Monopoly]], and founding [[Reykjavík]].
* [[August 29]] &ndash; [[Shays' Rebellion]] begins in [[Massachusetts]].
* September–December &ndash; [[Goethe]] undertakes his ''[[Italian Journey]]'' (published in [[1817]]).
* [[September 2]] &ndash; A [[hurricane]] strikes [[Barbados]].
* [[September 11]]–[[September 14|14]] &ndash; The [[Annapolis Convention (1786)|Annapolis Convention]] is held by delegates from six of the 13 states (Maryland, Virginia, Pennsylvania, Delaware, New Jersey and New York) resulting in the scheduling of the [[Philadelphia Convention]] to draft a national constitution.<ref name="Harper1786"/>
* [[September 14]] &ndash; [[Connecticut]] cedes to the United States all of its claims to lands between the 41st and 42nd parallels north and west of the [[Connecticut Western Reserve]].<ref name="Harper1786"/>
* [[September 25]] &ndash; The mine of [[Huancavelica]] in the [[Peru]]vian [[Andes]] collapses killing more than hundred people.<ref name=historica/> The event was a major setback for [[Mercury (element)|quicksilver]] production in the [[Spanish Empire]].<ref name=historica>{{Cite journal |title=El derrumbe de Huancavelica en 1786: Fracaso de una reforma borbónica |journal=Histórica |last=Lang |first=Mervyn |url= |volume=X |issue=2 |pages=213–226 |year=1986 |doi=10.18800/historica.198602.003 |language=es}}</ref>
* [[September 26]] &ndash; [[Eden Agreement]]: A commercial treaty is signed between the Kingdoms of Great Britain and France.<ref name=CBH>{{cite book|last1=Palmer|first1=Alan|last2=Palmer |first2=Veronica|year=1992|title=The Chronology of British History|publisher=Century Ltd|location=London|pages=230–231|isbn=0-7126-5616-2}}</ref>