compare list of conflicts in europe to those in middle east over past from 1000 AD - 1900AD:
https://en.wikipedia.org/wiki/List_of_conflicts_in_Europe
in particular state formation in late medieval and early modern europe saw immense bloodshed and turmoil.
middle east was comparatively peaceful in contrast, especially post mongol conquest.
e.g. compare 1700s and 1800s europe to middle east
So you're arguing the crusaders brought peace to the middle east?
This history is so vast I can't even begin to think about how to compare. But one thing that feels odd to me is how people think of the middle east as somehow separate/far from Europe when in fact it's basically the same neighborhood. The Greek and the Romans were there. Under the Ottoman Empire, Muslims from present day Bosnia moved to present day Israel: https://en.wikipedia.org/wiki/Bushnak
Don't forget that Christianity came from the middle east and ofcourse Islam.
The Ottoman Empire ruled vast swaths of present day Europe. Spain was under Muslim rule until 1492.
It's all one big mesh. Just yesterday I learnt that many present day Yemeni trace their roots to the Levant. Very different than farther regions like Afria, China, India and ofcourse the Americas, Australia etc.