Horse training refers to a variety of practices that teach horses to perform certain behaviors 
horse training must be a rewarding for the trainers to see the horse perform what they want them to do
Horses are trained to be manageable by humans for everyday care 
i guess they are different categories of training
Horses as also trained for  equestrian activities from horse racing to therapeutic horseback riding for people with disabilities.
i think the most common horse training is for racing
Yes for today, but historically, horses were trained for warfare, farm work, sport and transport
a horse is a very versatile animal so that is why you have many different training techniques
Horses are also trained for specialized jobs from movie stunt work to police and crowd control activities
i do like to watch jump racing, i wish it was more popular in the states