Editing 1539 (section)

=== April&ndash;June ===
* [[April 17]] &ndash; At [[Dresden]] in Germany, [[Henry IV, Duke of Saxony|Heinrich IV]] of the [[House of Wettin]], nicknamed "Heinrich der Fromme" (Henry the Pious) becomes the new [[List of rulers of Saxony|Duke of Saxony]] within the [[Holy Roman Empire]] upon the death of his older brother, [[George, Duke of Saxony|Georg der Bärtige]] ("George the Bearded").
* [[April 19]] &ndash; The [[Treaty of Frankfurt (1539)|Treaty of Frankfurt]] is signed at [[Frankfurt-am-Main]] by [[Charles V, Holy Roman Emperor]] on behalf of the Empire's Roman Catholic states, and the Lutheran theologian [[Philip Melanchthon]], representative of the [[Schmalkaldic League]] of Protestant German states.<ref name="hagenbach235">Hagenbach, p. 235.</ref> Effective May 1, the parties agree that no violent actions will be taken by either side against the other during a 15 month truce period.<ref>{{cite book |last = Hagenbach |first = Karl Rudolph |authorlink = Karl Rudolf Hagenbach |title = History of the Reformation in Germany and Switzerland |year = 1879 |url = https://archive.org/details/historyreformat00hagegoog |others = trans. Evelina Moore }}</ref>
* [[April 28]] &ndash; The [[English Parliament]] meets for the first time since 1536, after being summoned by King Henry VIII as his seventh Parliament.
* [[May 5]] &ndash; The English [[House of Lords]] creates a committee, balanced between religious reformers and religious conservatives, to examine and determine doctrine, eventually forming the "Six Articles".
* [[May 25]] &ndash; The inaugural declaration of the [[Protestant Reformation]] takes place in [[Leipzig]] (now part of Germany) with [[Martin Luther]] present, as Duke Henry IV pledges to adopt [[Lutheranism]] as the official religion of make the [[Duchy of Saxony]].
* [[May 30]] &ndash; [[Hernando de Soto (explorer)|Hernando de Soto]] lands at [[Tampa Bay]], [[Florida]] with 600 soldiers, with the goal of finding [[gold]]. He also introduces [[pig]]s into [[North America]]. 
* [[June 26]] &ndash; [[Battle of Chausa]] in modern-day [[Buxar]], [[India]]: [[Sher Shah Suri]] defeats the [[Mughal Empire|Mughal]] emperor, [[Humayun]]  (Sher Shah goes on to form the [[Sur Empire]], and take control of nearly all Mughal territory).
* [[June 28]] &ndash; The [[Six Articles (1539)|Six Articles]], an [[Act of Parliament|Act]] of the [[Parliament of England]], is given [[royal assent]] reaffirms certain [[Catholic]] principles in [[Henry VIII of England|Henry VIII]]'s [[Church of England]].<ref>{{cite book|chapter=1539|title=The People's Chronology|editor=Everett, Jason M.|publisher=Thomson Gale|year=2006}}</ref>