Editing 1604 (section)

=== April&ndash;June ===
* [[April 9]] &ndash; On the first day of the new year 966 M.E. on the Burmese calendar, King [[Nyaungyan Min]] of [[Myanmar|Burma]] makes a triumphant return to his capital at [[Inwa]] after his victory in the war against the principality of [[Mongnai State|Mongnai]] (Monē), one of the [[Shan States]] between Burma and [[Thailand|Siam]]
* [[April 17]] &ndash; [[False Dmitry I|Tsar Dmitry of Russia]] makes a public conversion to Roman Catholicism in order to attract the aid of Jesuits in his attempt to rule all of Russia.
* [[April 18]] &ndash; [[Maurice of Nassau]] assembles a combined army of 7,000 Dutch and 4,000 English soldiers to make an attack on the Spanish Netherlands (now Belgium). 
* [[May 19]] &ndash; Maurice of Nassau begins the [[Siege of Sluis (1604)|Siege of Sluis]], a port in the Spanish Netherlands, with 11,000 Dutch and English troops. Despite reinforcements from Spanish relief troops, the city surrenders after three months, with both sides having lost hundreds of casualties. 
* [[May 20]]
**Five conspirators in England, led by [[Robert Catesby]], who has invited Thomas Wintour, John Wright, Thomas Percy and Guy Fawkes, meet at the Duck and Drake Inn in London to make a plan for the assassination of King James.<ref>C. Northcote Parkinson, ''Gunpowder Treason and Plot'' (Weidenfeld and Nicolson, 1976) p. 48</ref>
**Peace discussions between England and Spain begin at Somerset House in London to end the [[Anglo-Spanish War (1585–1604)|Anglo-Spanish War]] after 19 years of fighting.
* [[May 22]] &ndash; English entrepreneur [[Oyapoc|Charles Leigh]] and a crew of 46 arrive in South America at what is now the [[Oyapock]] River in [[French Guiana]] after traveling on the ship ''Olive Plant''. The 35 men and boys who stay create a colonial settlement which they call Oliveleigh, and make a claim to all of the area.
* [[June 9]] &ndash; [[Thomas Percy (Gunpowder Plot)|Thomas Percy]], one of the English conspirators in the [[Gunpowder Plot]] to assassinate King James I, is appointed as one of the king's bodyguards by the Earl of Northumberland.
* [[June 15]] &ndash; [[Ottoman–Safavid War]]: General [[Cigalazade Yusuf Sinan Pasha]], commander of the eastern Ottoman Army, leads troops on a march from Constantinople to fight the [[Persia]]'s [[Safavid]] Army in Armenia, but arrives too late to save the city of [[Yerevan]]. 
* [[June]] &ndash; [[Ottoman–Safavid War (1603–18)]]: Shāh [[Abbas I of Persia]]'s [[Safavid dynasty|Safavid]] army captures the city of [[Yerevan]] from the [[Ottoman Empire]] after a siege. At this time the Shāh begins the expulsion of [[Armenians]] from [[Jolfa, Iran (city)|Jolfa]] to [[New Julfa]] in his capital of [[Isfahan]]; more than 25,000 die during the exodus.