Editing 1783 (section)

=== April&ndash;June ===
* [[April]] &ndash; General [[George Washington]] sends a letter to the 13 governors of the Confederation of the United States, regarding the needs of the nation.<ref name="Harper1783"/>
* [[April 3]] &ndash; A [[Treaty of Amity and Commerce (United States–Sweden)|Peace and Commercial Treaty]] is signed between the newly-formed [[United States]] and [[Sweden]] in Paris, among the first acts of state concluded between the U.S. and a foreign power.<ref>{{cite book|first=Anne|last=Klerkäng|title=Sweden – America's First Friend|location=[[Örebro]]|year=1958}} Includes fascimile reproduction of treaty text.</ref>
* [[April 8]] &ndash; The [[Crimean Khanate]], which has existed since [[1441]] and is a late remnant of the Mongol [[Golden Horde]], is annexed by the [[Russian Empire]] of [[Catherine the Great]].
* [[April 9]]–[[April 28|28]] &ndash; [[Second Anglo-Mysore War]]: [[Siege of Bednore]] &ndash; [[Tipu Sultan]] of Mysore with 100,000 troops besieges 1600 British [[East India Company]] troops who are obliged to surrender with [[honours of war]]. 
* [[April 15]] &ndash; Preliminary articles of peace ending the [[American Revolutionary War]] are ratified by the [[Congress of the Confederation]] in the United States.
* [[April 17]] &ndash; American Revolutionary War: [[Colbert raid|Colbert's Raid]]: A [[Spanish Empire|Spanish]] [[garrison]] under Captain Jacobo du Breuil defeat [[Kingdom of Great Britain|British]] [[Irregular military|irregular]]s at [[Arkansas Post]].<ref>{{cite book |last=Coleman |first=Roger E. |date=1987 |chapter=Chapter 11: Colbert's Raid |title=The Arkansas Post Story: Arkansas Post National Monument |url=https://www.nps.gov/parkhistory/online_books/arpo/history.pdf |number=Southwest Culteral Resources Center Professional Papers No. 12 |location=Santa Fe, New Mexico |publisher=[[Eastern National]] |pages=65-67 |access-date=May 17, 2025}}</ref>
* [[April 18]] &ndash; [[Three-Fifths Compromise]]: The first instance of black slaves in the United States of America being counted as three fifths of persons (for the purpose of taxation), is included in a resolution of the [[Congress of the Confederation]] (this is later adopted in the 1787 Constitution).
* [[May 13]] &ndash; The [[Society of the Cincinnati]], a fraternal organization for American veterans of the American Revolution, is formed in [[Newburgh, New York]].<ref name="Harper1783">''Harper's Encyclopaedia of United States History from 458 A. D. to 1909'', ed. by Benson John Lossing and [[Woodrow Wilson]] (Harper & Brothers, 1910) p167</ref>
* [[May 18]] &ndash; The first [[United Empire Loyalist]]s, fleeing the new United States, reach Parrtown in [[Saint John, New Brunswick]], Canada.
* [[May 26]] &ndash; [[A Great Jubilee Day]], celebrating the end of the [[American Revolution]], is held in [[Trumbull, Connecticut]].
* [[June 4]] or [[June 5]] &ndash; The [[Montgolfier brothers]] publicly demonstrate their [[hot air balloon]] at [[Annonay]], France.
* [[June 8]] &ndash; The [[volcano]] [[Laki]] in [[Iceland]] begins an 8-month eruption, starting the chain of natural disasters known as the [[Móðuharðindin]], killing tens of thousands throughout Europe, including up to 33% of Iceland's population, and causing widespread famine. It has been described as one of "the greatest environmental catastrophes in [[European history]]".<ref>{{cite web|first=David|last=Bressan|title=8, June 1783: The Laki eruptions|url= http://historyofgeology.fieldofscience.com/2011/06/8-june-1783-laki-eruptions.html|access-date=30 April 2012}}</ref>