Cowboys originated in Mexico.
When the spanish conquerors arrived, they started stablishing ranchs and farms, and the role of the <em>vaquero </em>(from the spanish word <em>vaca</em>) was coined to name the men who took care of the livestock, and who were also good with certain skills like herding, roping and riding.
As the ranching practices were spread, so did the culture of the cowboy, including their clothing style and their skills.
The first cowboys had different backgrounds like Mexican, Native American and African American, among others.
Rate of change of velocity is known as acceleration.
Research scientists used a standard practice called the scientific method to help them understand phenomena.
Answer:
Many historians consider the printing press as the most important invention in history because from its creation it allowed the development and expansion of knowledge through the printing of books. Until that moment, knowledge, science and other theories that generated technological, economic, political and social development could not be broadly transmitted, because the books were written by hand by the monks, who exercised a kind of censorship over any question that was against religious principles.
For this reason, the printing press removed the monopoly on knowledge from religion, while increasing the ease of transmitting said knowledge, exponentially increasing the speed of human development.
