Editing 1842 (section)

=== April–June ===
* April–September – [[1842 general strike]] spreads across England's industrial districts, driven by [[Chartism]]. Includes the [[Preston Strike of 1842|Preston Strike]] and [[1842 Pottery Riots|Pottery Riots]]. Protestors are killed by the military in several places.<ref>{{cite book|title=The General Strike of 1842|last=Jenkins|first=Mick|year=1980|publisher=Lawrence & Wishart|location=London|isbn=978-0853154884}}</ref>
* [[April 13]] – [[First Anglo-Afghan War]]: [[Battle of Jellalabad]] – British troops are victorious.
* [[May 5]]–[[May 8|8]] – The [[Great fire of Hamburg]] in Germany destroys around one-third of the city centre and kills 51.<ref>{{cite book|first1=Harry|last1=Braun|first2=Manfred|last2=Gihl|title=Der große Hamburger Brand von 1842|location=Erfurt|publisher=Sutton|year=2012|isbn=9783866809963}}</ref>
* [[May 8]] – [[Versailles rail accident]]: A train traveling between [[Versailles-Château (Paris RER)|Versailles]] and Paris, France derails, due to a broken locomotive axle, and catches fire, killing at least 55 passengers in the locked carriages.<ref>{{cite book |author=Charles Francis Adams |author-link=Charles Francis Adams, Jr. |title=Notes on Railroad Accidents |url=https://archive.org/details/notesonrailroada00adamuoft |year=1879 |publisher=G. P. Putnam's Sons }} Available online at ''catskillarchive.com'' [http://catskillarchive.com/rrextra/wkbkch06.Html The Versailles Accident]. Accessed 26 October 2012.</ref>
* [[May 11]] – The [[Income Tax Act 1842|Income Tax Act]] establishes the first peacetime [[income tax]] in the United Kingdom; 7 [[Penny (British pre-decimal coin)|pence]] in the [[pound sterling|pound]], for incomes over 150 pounds.<ref name=CBH>{{cite book|last=Palmer|first=Alan|last2=Palmer |first2=Veronica|year=1992|title=The Chronology of British History|publisher=Century Ltd|location=London|pages=264–266|isbn=978-0-7126-5616-0}}</ref>
* [[May 19]] – [[Dorr Rebellion]]: Militiamen supporting [[Thomas Wilson Dorr]] attack the arsenal in [[Providence, Rhode Island]], but are repulsed.
* [[June 4]] – In South Africa, hunter [[Dick King]] rides into a British military base in [[Grahamstown]], to warn that the [[Boer]]s have besieged [[Durban]] (he had left 11 days earlier). The British army dispatches a relief force.
* [[June 13]] – [[Queen Victoria]] becomes the first reigning British monarch to travel by train, on the [[Great Western Railway]] between [[Slough]] and [[London Paddington station]].<ref>{{cite book|last=Green|first=Oliver|author-link=Lawrence Leonard|title=Discovering London Railway Stations|publisher=Shire Publications|year=2011|isbn=978-0-7478-0806-0}}</ref>
* [[June 18]] – [[Education in Sweden]]: A primary school system is established in [[Sweden]].<ref>{{cite web|url=http://www.skolmuseet.se/skolans_historia.htm|title=Några årtal i skolans historia|publisher=Göteborg town museum|author=Hans Högman|language=sv|access-date=2 July 2016|archive-date=September 27, 2016|archive-url=https://web.archive.org/web/20160927125754/http://www.skolmuseet.se/skolans_historia.htm|url-status=live}}</ref>
* [[June]] – [[James Nasmyth]] [[patent]]s the [[steam hammer]] in the United Kingdom.<ref>{{cite book|last=Smiles|first=Samuel|author-link=Samuel Smiles|title=James Nasmyth Engineer: an Autobiography|publisher=John Murray|year=1912|url=https://archive.org/details/jamesnasmythengi00nasmiala|access-date=2009-11-14}}</ref>