Which of the following events did not result from at least one of the crusades?

a.
the muslims captured acre.
c.
the crusaders captured antioch.
b.
king louis vii and king conrad iii captured damascus.
d.
saladin retained control of jerusalem.

The following events did not result from at least one of the crusades are: b. king louis VII and king conrad III captured damascus.
the crusade were religious war between christian in europe and muslim to capturing or defending jerusalem.

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In 911, a group of vikings lead by rollo besieged paris and chartres. after a victory near chartres on 26 august, charles decided to negotiate with rollo. the talks were led by hervé, the archbishop of reims. this resulted in the treaty of saint-clair-sur-epte, which granted rollo and his soldiers all the land between the river epte and the sea. it also granted him brittany, "for his livelihood". at the time, brittany was an independent land which france had not been able to conquer. in exchange, rollo promised the king his loyalty and military assistance when needed. also rollo also agreed to be baptised and to marry gisela, the king's daughter. the territory given rollo is about the same as upper normandy. this would grow to become normandy under rollo's descendants. - wikepedia