I'm curious for what historical and cultural reasons all (as far as I'm aware, correct me if I'm wrong) of the martial arts are oriental in origin. Why did no such discipline arise in the west?
There are plenty of Western martial arts. Savate, boxing, Pankration, Capoeira, fencing to name a few. There is also Historical European Martial Arts (HEMA) which are attempts to recreate medieval martial arts from manuscripts written by the masters of the time.
It's worth a mention that 'martial arts' are generally only called that in the mainstream as a way of going 'Asian martial arts'. There are a great variety of western martial arts, but so many of them are either well-developed enough to have their own followings, or just seem second nature to those in the west, whereas Asian martial arts, with their 'flash' and odd names, have much more of a mystique.
But some things you might not consider, but are considered to be martial arts would be wrestling (The grapple variety, as opposed to the WWE variety), fencing, and boxing. There are -many- others, as well, though not quite as mainstream as those three.
hi! you may be interested in responses in these threads..
Europe
Why are hand-to-hand martial arts so much more prevalent in Asia than in other areas of the world?
I have a likely ignorant question about "fighting disciplines" and geography
Did peasant classes in europe and the middle east develop their own self-defense martial arts?
In the High Middle Ages, what sort of unarmed combat training did knights receive?
plus several posts on jousting
Elsewhere