Editing 1810 (section)

=== April–June ===
* [[April 2]] – [[Napoleon Bonaparte]] marries [[Marie Louise of Austria, Duchess of Parma]], in person, in Paris.<ref>{{cite book|author=Geoffrey James Ellis|title=The Napoleonic Empire|url=https://books.google.com/books?id=rjNdDwAAQBAJ&pg=PA53|date=11 November 1991|publisher=Macmillan International Higher Education|isbn=978-1-349-08847-8|pages=53}}</ref>
* [[April 19]] – [[Venezuela]] achieves home rule: [[Vicente Emparán]], Governor of the [[Captaincy General of Venezuela]], is removed by the people of [[Caracas]], and [[Supreme Junta]] is installed. Venezuela is the first South American state to proclaim independence from Spain.
* [[April 27]] – [[Ludwig van Beethoven|Beethoven]] composes his famous piano piece, ''[[Für Elise]]''.
* [[May 1]] – [[Macon's Bill Number 2]] becomes law in the United States, intending to motivate [[United Kingdom of Great Britain and Ireland|Britain]] and France to stop seizing American vessels during the [[Napoleonic Wars]].
* April – [[Kaumualii]] receives an assurance of the continued independence of the [[Kingdom of Hawaii]].<ref>{{cite book|author=United States. Congress. House. Committee on Interior and Insular Affairs|title=Native Hawaiian Study Commission Report: Oversight Hearing Before the Committee on Interior and Insular Affairs, House of Representatives, Ninety-eighth Congress, Second Session ... Hearing Held in Washington, DC, May 3, 1984|url=https://books.google.com/books?id=AODF4Pwi8y0C&pg=PA327|year=1985|publisher=U.S. Government Printing Office|pages=327}}</ref>
* [[May 3]] – [[Lord Byron]] swims across the [[Hellespont]] in Turkey.<ref name="Pocket On This Day">{{cite book|title=Penguin Pocket On This Day|publisher=Penguin Reference Library|isbn=0-14-102715-0|year=2006}}</ref>
* [[May 10]] – Rev. [[Henry Duncan (minister)|Henry Duncan]] opens the world's first commercial [[savings bank]], in [[Ruthwell]], Scotland.<ref>{{cite web|title=Chronology of Scottish History|work=A Timeline of Scottish History|publisher=Rampant Scotland|url=http://www.rampantscotland.com/timeline/1899.htm|access-date=March 10, 2014}}</ref>
* [[May 16]] – [[Johann Wolfgang von Goethe]] publishes his book ''Zur Farbenlehre'' (''[[Theory of Colours]]'').<ref>Götz Hoeppe, ''Why the Sky is Blue: Discovering the Color of Life'' (Princeton University Press, 2007) p126</ref>
* [[May 18]]–[[May 25|25]] – [[May Revolution]]: Armed citizens of [[Buenos Aires]] expel the [[Viceroy]] and establish a provincial government for [[Argentina]] (the ''[[Primera Junta]]''). [[Baltasar Hidalgo de Cisneros]] is removed.
* [[June 7]] – Argentina's new junta publishes the country's first newspaper, the ''[[Gazeta de Buenos-Ayres]]'', edited by [[Mariano Moreno]].
* [[June 23]] – [[John Jacob Astor]] forms the [[Pacific Fur Company]].
* June – [[Nicolas Appert]] publishes ''L'art de conserver pendant plusieurs années toutes les substances animales ou végétales'', the first description of modern [[food preservation]] using airtight containers.