In Nature Knows No Color-Line, historian Joel Augustus Rogers examines the origins of racial hierarchy and the color problem.
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According to Rogers, color prejudice was then used a rationale for domination, subjugation and warfare.
Rogers was a humanist who believed that there were no scientifically evident racial divisions--all humans belong to one "race." He believed that color prejudice generally evolved from issues of domination and power between two physiologically different groups.
In Nature Knows No Color-Line, historian Joel Augustus Rogers examines the origins of racial hierarchy and the color problem