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1070 CE
1080 CE
1090 CE
1100 CE
1110 CE
1078 CE: Future Byzantine emperor Alexios I Komnenos marries Irene Doukaina.
1081 CE - 1082 CE: The Normans, led by Robert Guiscard, attack Byzantine Greece.
1081 CE - 1118 CE: Reign of Byzantine emperor Alexios I Komnenos.
1082 CE: Byzantine emperor Alexios I Komnenos grants trade access and privileges to the Venetians in return for naval support.
1084 CE: The Normans defeat a Venetian naval force, allies of the Byzantine Empire.
1085 CE: Alexios I Komnenos recaptures Dyracchion from the Normans.
1087 CE - 1090 CE: The Pechenegs attack Byzantine Thrace.
1091 CE: A Byzantine army, with Cumans as allies, defeats the Pechenegs at the battle of Mount Lebounion.
1092 CE: Alexios I Komnenos introduces the electrum hyperpyron coin (worth one-third of a gold nomisma).
1095 CE: Byzantine emperor Alexios I Komnenos quashes a rebellion led by Nikephoros Diogenes.
1095 CE: Byzantine emperor Alexios I Komnenos appeals to the west for aid against the Seljuks.
1097 CE: The First Crusaders arrive at Constantinople.
1097 CE: The First Crusaders capture Nicaea.
1098 CE: The First Crusaders capture Antioch after an 8-month siege.
1107 CE: The Normans, led by Bohemund, besiege Dyracchion.
1108 CE: The Treaty of Devol is signed between the Byzantine Empire and the Normans, removing any Norman threat from the empire's territory.
1118 CE: Byzantine emperor Alexios I Komnenos dies of natural causes.