" The overseas frontier—wars in Cuba, the Dominican Republic, the Philippines, Nicaragua, and Haiti—acted as a prism, refracting the color line abroad back home. In each military occupation and prolonged counterinsurgency they fought, southerners could replay the dissonance of the Confederacy again and again. They could fight in the name of the loftiest ideals—liberty, valor, self-sacrifice, camaraderie—while putting down people of color. "

― Greg Grandin , The End of the Myth: From the Frontier to the Border Wall in the Mind of America