How does one collapse a root-cellar?
I suppose neglect causes it to slough in on itself - like a grave.
Yeah, I really don’t grasp the concept of a sudden collapse of Arab civilization. The Turks conquered them a long time ago, and then that Caliphate was taken out in the aftermath of WW I.
What passes for civilization in that part of the world is strong man rule, irrationality, a loony politically bent religion, and some western trappings when convenient.
To be quite honest, other than the fact that it can get worse (Iran, Hamas), there’s not a heck of a lot of loss to the world in the disappearance of said ‘culture’.