1100–1109
| Millennium: | 2nd millennium |
| Centuries: | 11th century – 12th century – 13th century |
| Decades: | 1070s 1080s 1090s – 1100s – 1110s 1120s 1130s |
| Years: | 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 |
| Categories: | Births – Deaths – Architecture Establishments – Disestablishments |
The 1100s decade ran from January 1, 1100, to December 31, 1109. It was the first decade of the 12th century.
The Eastern Hemisphere in 1100 AD
Events and trends
- 1100
- Henry I becomes King of England.
- Henry I proclaims the Charter of Liberties, one of the first examples of a constitution.
- Baldwin I becomes King of Jerusalem.
- The cities of Kalmar, Kungälv, and Varberg, Sweden are chartered.
- In Iceland, Althing decides that the laws should be transferred to a written form
- Approximate date of the invention of checkers.
- 1101
- Crusade of 1101 occurs
- 1102
- Coronation of Coloman of Hungary in the town of Biograd, adding the Croatian duchies of Slavonia and Dalmatia to the crown of Hungary (Personal union with Hungary).
- Crusaders capture Caesarea Maritima.
- Crusaders defeat an Egyptian invasion of the Kingdom of Jerusalem near Ascalon.
- 1103
- April 27—Anselm, Archbishop of Canterbury, goes into exile after falling out with Henry I of England
- Amadeus III becomes Count of Savoy
- Bohemund I of Antioch is released from imprisonment among the Turks
- The Scandinavian city of Lund becomes a see within the Roman Catholic Church
- Sigurd Jorsalfare, Øystein Magnusson and Olav Magnusson become joint kings of Norway.
- 1104
- September 3—St. Cuthbert reburied in the Durham Cathedral
- The Venice Arsenal, is founded in Venice.
- Alfonso I of Aragon becomes King of Aragon and Navarre.
- Historian Guibert of Nogent becomes abbot of Notre Dame de Nogent.
- Baldwin I of Jerusalem captures Acre.
- Baldwin II, count of Edessa, is taken prisoner by the Seljuk Turks at the Battle of Harran; Tancred becomes regent.
- Kilij Arslan I, Sultan of Rüm, starts a war with the Danishmends.
- The volcano Hekla erupts in Iceland, destroying settlements
- 1105
- Henry IV, Holy Roman Emperor deposed by his son, Henry V
- Tamna kingdom annexed by Korean Goryeo Dynasty.
- 1106
- Great Comet of 1106 first sighted.[1]
- September 28—Henry I of England defeats his older brother Robert Curthose, duke of Normandy, at the Battle of Tinchebrai, and imprisons him in Devizes castle; Edgar Atheling and William Clito are also taken prisoner.
- Balaguer, Spain, is captured from the Moors by the count of Urgell.
- Boleslaus III of Poland begins a war against his brother Zbigniew for control of Poland.
- 1107
- Emperor Toba ascends the throne of Japan
- The great Buddhist centre of learning at Nalanda is destroyed by invaders.
- Through the Compromise of 1107, suggested by Adela, the sister of King Henry, the Investiture Struggle in England was ended.
- 1108
- May—Battle of Uclés
- Consecration of Chichester cathedral.
- Saint Magnus becomes the first earl of Orkney.
- In Pistoia, Italy, Cathedral of San Zeno burned to the ground.
- Alexius I Comnenus and Bohemund I of Antioch negotiate the Treaty of Devol.
- 1109
- Battle of Naklo
- Battle of Hundsfeld
- Battle of Głogów
- Fulk of Jerusalem becomes count of Anjou
- Alfonso I of Aragon marries Urraca of Castile
- Crusaders capture Tripoli
- Anselm of Laon becomes chancellor of Laon
- Principality of Nitra ceases to exist after Hungarian King Coloman deposed its last ruler