The United States is an immigrant country, without nobles, and it is easy to produce the tradition of "getting rich through labor". This is the core of American thought. The "American Dream" means that a self-made man can finally make a fortune.

With the gradual spread of this idea, immigrant countries are bound to be influenced by sailor's thought, which further deepens the creation of wealth through labor and liberalism and individualism. In addition, the establishment and gradual expansion of American farms in the west have created a large number of cowboys. These cowboys wandered from farm to farm, lived by herding cattle and driving away robbers, and gradually accumulated wealth. Later, they bought their own farms, made a fortune, and then boasted about the true or false stories of their youth. At that time, cowboys were dressed differently than we are now.

Americans from the 1950s to the early 1970s were called the "Beat Generation". They don't have much money and don't go out to work, so they can't afford beautiful and shiny clothes. So canvas and khaki are widely used. This very comfortable dress just meets people's demand for freedom. Later, an "attached pocket" was added (the pocket used to hold the lighter when marching), which was just enough to hold and stick the zippo lighter. Zippo was still a low-priced product at that time. This is the origin of jeans that are widely popular nowadays. In other words, jeans have nothing to do with cowboy culture, but have a lot to do with "happys".