Where did hunter jumper come from historically?

The hunter jumper discipline traces its origins directly to the fox hunting tradition that was central to British aristocratic culture from the seventeenth century through the nineteenth century and that was transplanted to the American East Coast where it took root in the horse culture of Virginia, Maryland, and New England. In the fox hunting field, horses needed to navigate varied terrain — fields, woods, streams, and stone walls — smoothly and safely while keeping up with the hounds, and the qualities that made a successful field hunter — a ground-covering canter, a careful and economical jumping style, calm and obedient manners, and the physical soundness to work all day — became the standard against which hunter class horses were eventually judged in the first horse shows. American horse shows in the nineteenth century began including hunter classes that evaluated horses on the same qualities that made them useful in the field, and these classes evolved into the subjective judging format that contemporary hunters retain. The jumper division developed somewhat later and separately, emphasizing the horse's ability to clear increasingly demanding fences regardless of style — a format that appealed to the competitive instinct for objective measurement that subjective hunter judging did not satisfy. The equitation tradition developed alongside hunters as a way of evaluating and developing the young riders who would eventually become the competitors in both hunter and jumper divisions, and the great equitation trainers of the twentieth century — including George Morris, whose systematic teaching of classical hunt seat position shaped the American hunter jumper tradition for decades — created the educational framework that contemporary hunt seat equitation teaching reflects.