In African Life and Customs, Blyden examined the culture of "pure" Africans-- those untouched by European and Asiatic influences. He identified the family as the basic unit in African society and polygamy as the foundation of African families. He described African social systems as cooperative; everyone worked for each other. No one went without work, food, or clothing. Blyden challenged white racial theorists who held Africans were inferior and whose arguments supported their preconceived ideas