How did other cultures deal with lefties? I'm thinking of folks like European Knights for instance? A less structured system but certainly no less capable.
I do know that in golf many lefties had to learn to play right handed due to a lack of left-handed clubs. Obviously a sword is neutral but a lack of left-handed teachers would achieve the same thing.
Does anyone do Japanese Caligraphy left-handed? What about kyudo? What about Japanese arquebusier's and musketeers? What about more recent times? Say, rifle training for infantry in WW2, for instance.
Lots of questions? No anwsers.