The United States is a new capitalist country, and its technical strength has surpassed that of early capitalist countries such as Britain and France. However, Britain and France controlled most of the colonies as raw materials producing areas and dumping sites. As a rising star, America has suffered a lot. In order to reverse the unfavorable situation, the United States put forward the slogan of national independence, aiming at depriving Britain and France of their colonies, and then taking advantage of their technological advantages to seize raw material producing areas and dumping sites.