Answer:
The Second Crusade is the right answer.
Step-by-step explanation:
The Second Crusade was launched from Europe. Due to the lack of unity among the Muslim groups the Crusaders owed their victory in parts. However, when they began grouping, they began fighting effectively. Therefore, the Second Crusade began as an acknowledgement to the destruction of the County of Edessa in the year 1144 to the troops of Zengi. The Second Crusade answered the Christians.