Western riding

Western riding is a style of horseback riding which evolved from the ranching and warfare traditions brought to the Americas by the Spanish Conquistadors, and both equipment and riding style evolved to meet the working needs of the cowboy in the American West. American cowboys needed to work long hours in the saddle over rough terrain, sometimes needing to rope cattle with a lariat (or lasso). Because of the necessity to control the horse with one hand and use a lariat with the other, western horses were trained to neck rein, that is, to change direction with light pressure of a rein against the horse's neck. Horses were also trained to exercise a certain degree of independence in using their natural instincts to follow the movements of a cow, thus a riding style developed that emphasized a deep, secure seat, and training methods encouraged a horse to be responsive on very light rein contact.

Though there are significant differences in equipment, there are fewer differences between English and Western riding than appear at first glance. Both styles require riders to have a solid seat, with the hips and shoulders balanced over the feet, with hands independent of the seat so as to avoid jerking the horse in the mouth and interfering with its performance.

"Western Riding" is also the name for a specific event within western competition where a horse performs a pattern that combines trail and reining elements.

The needs of the cowboy's job required different tack than was used in "English" disciplines. Covering long distances, and working with half-wild cattle, frequently at high speeds in very rough, brushy terrain, meant the ever-present danger of a rider becoming unseated in an accident miles from home and support. Thus, the most noticeable equipment difference is in the saddle, which has a heavy and substantial tree (traditionally made of wood) to absorb the shock of roping. The western saddle features a prominent pommel topped by a horn (a knob used for wrapping a lariat after roping an animal), a deep seat and a high cantle. Depending on the local geography, tapaderos ("taps") cover the front of the stirrups to prevent brush from catching in the stirrups. Cowboy boots have somewhat more pointed toes and higher heels than a traditional work boot, modifications designed to prevent the rider's foot from slipping through the stirrup during a fall and being dragged.

...
Wikipedia