Which side of the road to drive?
First of all, it makes sense for the driver of a car to be located on the off-side of the vehicle because they can see further around obscured near-side curves in the road.
This being so, then with the majority of people being right-handed, it makes more sense to me to drive on the left-hand side of the road, and thus be positioned on the right-hand side of the vehicle, because you then use your left hand to change gear and operate other ancillaries whilst leaving your more competant right hand to steer the vehicle.
So what was the reasoning for driving on the right-hand side of the road?