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1140 CE
1150 CE
1160 CE
1170 CE
1180 CE
1143 CE - 1180 CE: Reign of Byzantine emperor Manuel I Komnenos.
1145 CE: Pope Eugenius III calls for the Second Crusade.
1146 CE: Joscelin II's attempt to retake Edessa fails and the city is sacked by Nur ad-Din.
1147 CE - 1148 CE: Campaigns against pagans in the Baltic are led by Germanic and Danish nobles during the Second Crusade.
1147 CE - 1149 CE: The Second Crusade is launched to recapture Edessa for Christendom. It is not successful.
1147 CE: The siege of Lisbon during the Second Crusade.
1147 CE: Dobin and Malchow in northeast Germany are captured during the Second Crusade.
1147 CE: The armies of the Second Crusade arrive in Constantinople.
1147 CE: Almeria in northern Spain is captured from the Moors during the Second Crusade.
1147 CE: The capture of Lisbon by the Second Crusaders.
1147 CE: At Dorylaion a force of Muslim Seljuk Turks attacks an army led by Conrad III during the Second Crusade.
1147 CE: An army led by Louis VII defeats a Seljuk army in Asia Minor during the Second Crusade.
1148 CE: An army led by Louis VII is defeated by the Seljuks as it crosses the Cadmus Mountains during the Second Crusade.
1148 CE: The unsuccessful siege of Damascus during the Second Crusade.
1148 CE: Conrad III, one of the leaders of the Second Crusade, returns to Europe.
1148 CE: Tortosa in eastern Spain is captured from the Moors during the Second Crusade.