Editing 1843 (section)

=== January–March ===
* [[January 3]] – The ''[[Illustrated Treatise on the Maritime Kingdoms]]'' (海國圖志, ''Hǎiguó Túzhì'') compiled by [[Wei Yuan]] and others, the first significant Chinese work on the West, is published in China.<ref>{{cite book|title=The Cambridge History of China: Late Ch'ing 1800-1911|last1=Hao|first1=Yen-p'ing|last2=Wang|first2=Erh-min|editor1-last=Fairbank|editor1-first=John King|editor1-link=John King Fairbank|editor2-last=Twitchett|editor2-first=Denis Crispin|isbn=978-0521-2202-93|volume=11|url=https://books.google.com/books?id=pEfWaxPhdnIC|year=1980|publisher=Cambridge University Press|page=148}}</ref><ref>{{cite book|title=Wei Yuan and China's Rediscovery of the Maritime World|last1=Leonard|first1=Jane Kate|series=Harvard East Asian Monographs|isbn=978-0674-9485-56|url=https://books.google.com/books?id=wQCm-bequYgC|year=1984|publisher=Council on East Asian Studies, Harvard University|location=Cambridge, Massachusetts}}</ref>
* [[January 6]] – [[Antarctic]] explorer [[James Clark Ross]] discovers [[Snow Hill Island]].
* [[January 20]] – [[Honório Hermeto Carneiro Leão, Marquis of Paraná]] is appointed by the Emperor, Dom Pedro, as the leader of the Brazilian Council of Ministers, although the office of [[Prime Minister of Brazil]] will not be officially created until 1847.
* [[January]]
** Serial publication of [[Charles Dickens]]'s novel ''[[Martin Chuzzlewit]]'' begins in [[London]]; in the July chapters, he lands his hero in the United States.
** [[Edgar Allan Poe]]'s short story "[[The Tell-Tale Heart]]" is published in ''The Pioneer'', a [[Boston]] magazine.
** The [[Quaker]] magazine ''[[The Friend (Quaker)|The Friend]]'' is first published in London.
* [[February 3]] – [[Uruguayan Civil War]]: [[Argentina]] supports [[Manuel Oribe|Oribe]] of [[Uruguay]], and begins a [[Great Siege of Montevideo|siege of Montevideo]].
* [[February 6]] – The [[Virginia Minstrels]] perform the first [[minstrel show]], at the [[Bowery Amphitheatre]] in New York City.
* [[February 8]] – The [[1843 Guadeloupe Earthquake]] hits the Caribbean island of [[Guadeloupe]], killing 1,500–5,000 people.<ref>{{cite book|title=The Illustrated History of Natural Disasters|date=April 3, 2018|publisher=Springer, Dordrecht|pages=163|doi=10.1007/978-90-481-3325-3_38|chapter = Guadeloupe Earthquake, Antilles, 1843|isbn = 978-90-481-3324-6 }}</ref>
* [[February 11]] – [[Giuseppe Verdi]]'s opera ''[[I Lombardi alla prima crociata]]'' premieres at [[La Scala]] in [[Milan]].
* [[February 14]] – The event that will inspire The Beatles' 1967 song "[[Being for the Benefit of Mr. Kite!]]" is held in England.
* [[February 25]] – [[Paulet Affair (1843)|Paulet Affair]]: [[Lord George Paulet]] occupies the [[Kingdom of Hawaii]] in the name of Great Britain.
* [[February]] – Shaikh Ali bin Khalifa Al-Khalifa captures the fort and town of [[Riffa]] after the rival branch of the family fails to gain control of the Riffa Fort and flees to Manama. Shaikh Mohamed bin Ahmed is killed at the battle, called the Battle of Hunayniya.
* [[March 8]] – The Danish government re-establishes the [[Althing]] in [[Iceland]] as an advisory body, by royal decree.
* [[March 11]]–[[March 14|14]] – ''[[Eta Carinae]]'' flares, to become the [[List of brightest stars|second-brightest star]].
* [[March 13]] – [[Catawba County, North Carolina]] is created, and its first court is held in Mathias Barringer Jr.'s house.
* [[March 15]] – [[Victoria, British Columbia]], is founded by the Hudson's Bay Company as a trading post and fort.
* [[March 16]] – The city of [[Petrópolis]] is founded by the government of [[Empire of Brazil|Brazil]].<ref name="WDL">{{cite web|url= http://www.wdl.org/en/item/1360/|title=Emperor Street|website=[[World Digital Library]]|date=1860–1870|access-date=2013-08-24}}</ref>
* [[March 21]] – The world does not end, contrary to the first prediction by American preacher [[William Miller (preacher)|William Miller]].
* [[March 24]] – [[Battle of Hyderabad]]: The [[Bombay Army]], led by [[Charles James Napier|Major General Sir Charles Napier]], defeats the [[Talpur dynasty|Talpur Mirs]], securing [[Sindh]] as a [[Presidencies and provinces of British India|province of British India]].
* [[March 25]] – [[Marc Isambard Brunel]]'s [[Thames Tunnel]], the first tunnel under the [[River Thames]] and the world's first bored underwater tunnel, is opened in London for pedestrians.<ref name="Pocket On This Day">{{cite book|title=Penguin Pocket On This Day|publisher=Penguin Reference Library|isbn=978-0-14-102715-9|year=2006}}</ref>