Pseudo-scientific racism was promoted by the Confederacy to justify itself.

During the Civil War the Confederate government published The Index in London to garner support for itself, proposing that the Confederacy was defending a system of white supremacy supported by pseudo-scientific racism.

One of these pseudo-scientific racist articles, is in the book, "The Confederate and Neo-Confederate Reader," and another is online at:

http://www.confederatepastpresent.org/index.php?option=com_content&view=article&id=87:qthe-natural-history-of-manq-heny-hotze-july-23-1863&catid=39:civil-war-

It is not surprising that the Confederacy opted to promote pseudo-scientific racism, since Jefferson Davis himself wrote a letter to endorse a pamphlet by white supremacist Van Evrie which advanced various pseudo-scientific crackpot ideas which argued that sub-Saharan Africans were a separate species intermediate between white people and orangutans. Davis's letter of endorsement and an extract of the pamphlet are also in the book "The Confederate and Neo-Confederate Reader."