 Aymara society was organized by ayllus, or kinship groups.An Ayllu was divided into two strata – upper ("hanansaya") and lower ("urinsaya").The Aymaras also controlled and dominated the Uru and Puquina people, who had lived in the Andean region before the Aymaras, and by the 12th century they were reduced to the status of oppressed, landless workers subservient to the Aymaras.