Editing 1055 (section)

== Events ==
<onlyinclude>
===By place===

==== Byzantine Empire ====
* [[January 11]] &ndash; Emperor [[Constantine IX Monomachos]] dies after a 12½-year reign at [[Constantinople]]. He is succeeded by [[Theodora Porphyrogenita (11th century)|Theodora]] (a sister of the former Empress [[Zoë Porphyrogenita|Zoë]]), who is proclaimed by the [[imperial guard]] (with strong opposition from the council) as empress of the [[Byzantine Empire]].

====Europe====
* King [[Ferdinand I of León]] ("the Great") begins his campaign against [[al-Andalus]]. He conquers [[Seia]] from the [[Christianity|Christian]] allies of the Muslim [[taifa]]s.<ref name=picard2000>{{cite book|last=Picard|first=Christophe|title=Le Portugal musulman (VIIIe-XIIIe siècle. L'Occident d'al-Andalus sous domination islamique|year=2000|publisher=Maisonneuve & Larose|location=Paris|isbn=2-7068-1398-9|page=109}}</ref> In a drive to consolidate his southern border in [[Portugal]] he re-populates the city of [[Zamora, Spain|Zamora]] with some of his [[Cantabria]]n (''montañeses'') subjects.

==== England ====
* [[October 24]] &ndash; [[Ælfgar, Earl of Mercia]], is outlawed by the [[Witenagemot|witan]] ("meeting of wise men"). In revenge he builds a force and allies himself with the Welsh king [[Gruffydd ap Llywelyn]]. After defeating [[Ralph the Timid]] (a nephew of King [[Edward the Confessor]]), they attack [[Hereford]] and raid the church – taking everything of value, leaving the building on fire. The rebels also attack [[Leominster]].
* Edward the Confessor gives [[Tostig Godwinson]] (upon the death of Earl [[Siward, Earl of Northumbria|Siward]]) the important position as earl of [[Kingdom of Northumbria|Northumbria]] and the difficult mission of bringing the northern state under control.<ref>{{cite web|url=http://users.hunterlink.net.au/~mbemdm/chapter1.html|title=History of Ireleth and Askam-in-Furness|publisher=Bruderlin MacLean Publishing Services|author=MacLean, Mark|date=1999|access-date=March 30, 2016|archive-url=https://web.archive.org/web/20170305123551/http://users.hunterlink.net.au/~mbemdm/chapter1.html|archive-date=March 5, 2017|url-status=dead|df=mdy-all}}</ref>

==== Arabian Empire ====
* Winter &ndash; The [[Seljuk Turks]] led by Sultan [[Tughril]] capture [[Baghdad]] and enter the city in a Roman-styled triumph. [[Al-Malik al-Rahim]], the last [[Buyid dynasty|Buyid]] emir in [[Iraq]], is taken prisoner. 

===By topic===

====Architecture====
* Construction on the [[Liaodi Pagoda]] in [[Hebei]] is completed (the tallest pagoda in Chinese history, standing at a height of 84 m (275 ft) tall).

====Religion====
* King [[Andrew I of Hungary]] ("the Catholic") establishes the Benedictine [[Tihany Abbey]]. Its [[Establishing charter of the abbey of Tihany|foundation charter]] is the earliest written record extant in the Hungarian language.
* [[April 13]] &ndash; [[Pope Victor II]] succeeds [[Pope Leo IX|Leo IX]] as the 153rd [[pope]] of the [[Catholic Church]] in [[Rome]] (until [[1057]]).</onlyinclude>