
The origins of the cowboy tradition come from Spain, beginning with the hacienda system of medieval Spain. This style of cattle ranching spread throughout much of the Iberian peninsula and later, was imported to the Americas. Both regions possessed a dry climate with sparse grass, and thus large herds of cattle required vast amounts of land in order to obtain sufficient forage. The need to cover distances greater than a person on foot could manage gave rise to the development of the horseback-mounted vaquero.
Various aspects of the Spanish equestrian tradition can be traced back to Arabic rule in Spain, including Moorish elements such as the use of Oriental-type horses, the la jineta riding style characterized by a shorter stirrup, solid-treed saddle and use of spurs,[11] the heavy noseband or hackamore,[12] (Arabic šakīma, Spanish jaquima)[13] and other horse-related equipment and techniques.[11][12] Certain aspects of the Arabic tradition, such as the hackamore, can in turn be traced to roots in ancient Persia.[12]
During the 16th century, the Conquistadors and other Spanish settlers brought their cattle-raising traditions as well as both horses and domesticated cattle to the Americas, starting with their arrival in what today is Mexico and Florida.[14] The traditions of Spain were transformed by the geographic, environmental and cultural circumstances of New Spain, which later became Mexico and the Southwestern United States. In turn, the land and people of the Americas also saw dramatic changes due to Spanish influence.
Thus, though popularly considered American, the traditional cowboy began with the Spanish tradition, which evolved further in what today is Mexico and the Southwestern United States into the vaquero of northern Mexico and the charro of the Jalisco and Michoacán regions. Most vaqueros were men of mestizo and Native American origin while most of the hacendados (ranch owners) were ethnically Spanish.[15] Mexican traditions spread both South and North, influencing equestrian traditions from Argentina to Canada.
The arrival of horses was particularly significant, as equines had been extinct in the Americas since the end of the prehistoric ice age. However, horses quickly multiplied in America and became crucial to the success of the Spanish and later settlers from other nations. The earliest horses were originally of Andalusian, Barb and Arabian ancestry,[16] but a number of uniquely American horse breeds developed in North and South America through selective breeding and by natural selection of animals that escaped to the wild. The Mustang and other colonial horse breeds are now called "wild," but in reality are feral horses—descendants of domesticated animals.
As English-speaking traders and settlers expanded westward, English and Spanish traditions, language and culture merged to some degree. Before the Mexican-American War in 1848, New England merchants who traveled by ship to California encountered both hacendados and vaqueros, trading manufactured goods for the hides and tallow produced from vast cattle ranches. American traders along what later became known as the Santa Fe Trail had similar contacts with vaquero life. Starting with these early encounters, the lifestyle and language of the vaquero began a transformation which merged with English cultural traditions and produced what became known in American culture as the "cowboy".[17]
With the arrival of railroads, and an increased demand for beef in the wake of the American Civil War, the iconic American cowboy evolved as the older traditions combined with the need to drive cattle from the ranches where they were raised to the nearest railheads, often hundreds of miles away.[1]

