A bit of a nitpick, but Christianity and Judaism Islam are middle eastern belief systems. They also heavily disrupted western thought for nearly two millennia. But they are not endemic of the west, but an imposition, albeit, now voluntary, but with also a terrible and violent history against the native western traditions.
I'm well aware that some might consider them "middle-eastern", which is why I said "essentially" a western system of beliefs given that the representation of them today is more reflective of current "western" culture than how they originated.
