This period would also have seen the establishment of more pororosiek. The final expansion would occur during the middle of the nineteenth century when the Nandi took the Uain Gishu plateau from the Uasin Gishu. Emotinua organization The emotinwek system of territorial organisation was broadly similar to that of other Kalenjin communities. The Nandi territory was by the turn of the century divided into six counties known as emet (pl. emotinua/emotinwek). These were Wareng, located to the north, Mosop in the northeast, Tindiret in the east, Soiin and Pelkut in the south, Aldai and Chesumei in the west and Emgwen in the center. The emotinwek were divided into districts known as bororiet (borororisiek) and these were divided into villages known as kokwet (kokwotinwek). The Nandi administrative system was unique among the Kalenjin in having the bororiosiek administrative layer. Within the wider Kalenjin administrative system, the Kokwet was the most significant political and judicial unit in terms of day to day issues. The kokwet elders were the local authority for allocating land for cultivation, they were also the body to whom the ordinary member of the tribe would look for a decision in a dispute or problem which defied solution by direct agreement between the parties. Membership of the kokwet council was acquired by seniority and personality and within it decisions were taken by a small number of elders whose authority derived from their natural powers of leadership. Among the Nandi however, the Bororiet was the most significant institution and the political system revolved around it. Cultural development The Nandi of the nineteenth century were a primarily martial community and little cultural development was experienced for much of this period. Hollis (1905) for instance observed that "the art of music has not reached a very advanced stage in Nandi". The social climate (see First Mutai and Second Mutai) led to the development of a learning system known as Kamuratanet that principally revolved around preparation for warfare, both defensive and offensive. It divided the male sex into boys, warriors and elders while the female sex is divided into girls and married women. The first stage began at birth and continued until initiation. All boys who were circumcised together were said to belong to the same ibinda (age set) and once the young men of a particular came of age, they were tasked with protecting the tribal lands and the society, the period