In 1900 W. E. B. DuBois prophesied that the colour line would be the key problem of the twentieth-century and he later identified one of its key dynamics: the new religion of whiteness that was sweeping the world. Whereas most historians have confined their studies of race-relations to a national framework, this book studies the transnational circulation of people and ideas, racial knowledge and technologies that under-pinned the construction of self-styled...