Why was the First Crusade fought

This assignment is 1-3 pages double-spaced, 12-point.

QUESTION: Why was the First Crusade fought? Was the Christian call-to-arms justified? Why or why not? Defend your answer.

TEXT LINK:

Part 1: http://i.imgur.com/IqFvpvj.png

Part 2: http://i.imgur.com/zjATHHs.png