Editing 1892 (section)

=== April–June ===
* [[April]] – The [[Johnson County War]] breaks out between small farmers and large ranchers in [[Wyoming]].
* [[April 15]] – The [[General Electric]] Company is established through the merger of the [[Thomson-Houston Electric Company]] and the Edison General Electric Company.
* [[May 19]] – Battle of Yemoja River: British troops defeat [[Ijebu Kingdom|Ijebu]] infantry in modern-day [[Nigeria]], using a [[maxim gun]].
* [[May 20]] – The last [[broad gauge]] train runs from [[Paddington]] on the [[Great Western Railway]] of England.
* [[May 22]] – The British conquest of [[Ijebu Ode]] marks a major extension of colonial power into the [[Nigeria]]n interior.
* [[May 24]] – Prince George (later [[George V of the United Kingdom]]) becomes [[Duke of York]].<ref>{{cite book | last = Fryde | first = E. B. | title = Handbook of British chronology | publisher = New York Cambridge University Press | location = Cambridge England | year = 1996 | isbn = 9780521563505 | page=48}}</ref>
* [[June 5]] – An oil fire in [[Oil City, Pennsylvania]], United States, kills 130 people.
* [[June 6]] – The [[Chicago "L"]] begins operation for the first time with the opening of the [[South Side Elevated Railroad|Chicago and South Side Rapid Transit Railroad]].
* [[June 7]] – [[Homer Plessy]], a mixed-race man, is arrested for deliberately sitting in a whites-only railroad car in Louisiana, leading to the landmark United States Supreme Court decision ''[[Plessy v. Ferguson]]'', which legitimized "[[separate but equal]]" [[racial segregation in the United States]].
* [[June 11]] – The [[Limelight Department]], later one of the world's first film studios, is officially established in [[Melbourne]], Australia.
* [[June 30]] – The [[Homestead Strike]] begins in [[Homestead, Pennsylvania]], culminating in a battle between striking workers and private security agents on [[July 6]].