The Rising Tide of Color: The Threat Against White World-Supremacy (1920), by Lothrop Stoddard, is a book about racialism and geopolitics, which describes the collapse of white supremacy and colonialism because of the population growth among "people of color", rising nationalism in colonized nations, and industrialization in China and Japan. To counter the perceived geopolitical threat, Stoddard advocated restricting non-white immigration into white-majority countries, restricting immigration of non-members of the “Nordic race” to countries primarily containing members of the “Nordic race”, restricting Asian migration to Africa, and slowly giving independence to European colonies in Asia (including the Middle East). A noted eugenicist, Stoddard supported a separation of the "primary races" of the world and warned against miscegenation, the mixing of the races.