The horse was probably first domesticated and trained (in a way to gentle it for use) by Central Asians. Evidence suggests that these early peoples had the (previously) wild Asian horse under their hand by 4,500 B.C. A link is provided.
The winer of the first Melbourne cup was trained by Etienne de Mestre.
Horse trainers
The first winner of the Melbourne Cup was by Archer trained by Etienne De Mestre, in 1861
"His horse was trained to race." is a simple sentence.
From my experience, barrel racing horses are often crazy, poorly trained horses that know only one thing: Run. They are often ridden with harsh bits because that's the only thing that can control them because again, they only know to run and that is all they've been trained to do. Not saying that all barrel racing horses are like that, but all that I've seen are. Not at all what you want for a first horse. You want an easy-going well-trained horse. I would advise a horse trained in reining. Horses trained for reining are super broke, calm, responsive well-trained horses. Not saying reining is the only way to get a horse like that, but any good reining horse is.
They can. If it is a calm, quiet, well trained, preferably older saddlebred, they can make a great first horse. This goes for any breed. If it is calm, quiet, well trained and preferably older (because older is calmer) then any breed meeting those requirements can be a great first horse. What you don't want is a "hot", anxious, young green horse.
Depending on the condition of the horse, all ages of horses should be trained.
NO horse is completely trained!
by a horse
depends how well the horse is trained
from what i can tell, an unproportional horse or a horse that is badly trained. its usually not their fault.
A horse that is not trained