Question

who conquered edessa from the christians?

Explanation:

The question is about historical events, specifically the conquest of Edessa from Christians. In history (a subfield of Social Science), Edessa (a Crusader state) was conquered by Imad ad - Din Zengi in 1144. He was a Turkish ruler and this conquest was a significant event in the context of the Crusades and medieval Middle Eastern history.

Answer:

Imad ad - Din Zengi conquered Edessa from the Christians in 1144.