Western riding is considered a style of horse riding which has evolved from the ranching and warfare traditions which were brought to the Americas by the Spanish conquistadors, as well as both equipment and riding style which evolved to meet the working needs of the cowboy in the American West. At the time, American cowboys had to work long hours in the saddle and often over rough terrain, sometimes having to rope a cattle using a lariat, also known as a 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.