Religion in the crusades

Based on the lecture and the book  A History of the World in 100 Objects
Neil MacGregorMacGregor chapters, do you believe that religion was a primary or secondary factor that motivated individuals during the Crusades? If it was a secondary factor, what were the primary factors? 
use this video in addition to a chapter in the book

https://share.vidyard.com/watch/HZRSA9kCvGEHMgfRpm3GPv?

https://share.vidyard.com/watch/DrGXKxfCUaFt9F8q8DE1yt?

https://share.vidyard.com/watch/QUFGGJvuBXWqqUtH4oyCVm?

Please watch the first 9 minutes and 5 seconds of this BBC documentary on the Crusades. If the embedded video does not work, try the following link:

https://www.youtube.com/watch?v=D6sH2bXJ7hk

Instructions:

Write a brief 300-500 word essay with three components: 1) a thesis statement as the very first sentence, 2) at least 3 key words from the lectures, and 3) evidence from both the lecture and readings (at least two of the assigned MacGregor chapters: Hedwig Beaker, Hebrew Astrolabe, and Holy Thorn Reliquary). You must include Chicago/Turabian footnotes in your essay.
To cite the YouTube Video, use the following format:

BBC Documentary, The Crusades: Victory and Defeat (November 2018), YouTube.
The world limit is strict, so do not include an introduction or conclusion. Do not write quotations longer than 10 words