Answer :

Gibbs
There were many causes of the crusades including political, economic, and religious factors. However, the crusades were a major conflict between European Christian forces and Muslim armies from Western Asia who fought for control of the Holy Lands that had importance to both Christians in Muslim. The control of these lands brought power, prestige, religious importance, and also economic gains to whichever force controlled these lands. 
Ablunt

Answer:

control of agricultural land

fights to create one religion

religious differences

Explanation:

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