"north," but it has become a term of ethnic identification. The Nyamwezi and Sukuma region lies between 2°10′ and 6°20′ S and 31°00′ and 35°00′ E. The Nyamwezi "home" area is in the Tabora Region and western Shinyanga Region, and Sukumaland lies to the north and east, covering the eastern Shinyanga Region and the Mwanza Region. There has been much population movement in and beyond these areas, and members of both groups have also settled on the coast and elsewhere. Sukuma and members of other groups, such as the Tutsi and the Sumbwa, are often found in Nyamwezi villages, but Sukuma villages are ethnically more homogeneous. Sukuma took over the Geita area of Mwanza Region during the colonial period, and they have expanded farther west since then. They have also moved down into Nzega District and the neighboring Igunga District, and some have migrated into the southern highland areas of Tanzania, and even into Zambia. These Sukuma movements have stemmed from political factors, such as colonial cattle-culling policies, and from local overcrowding and deteriorating soil conditions. The two areas form a large and undulating tableland, most of it at elevations between . There are several rivers in the region, but most of them do not flow during the drier months. The year can be broadly divided into a rainy season, from about November until April, and a dry season the rest of the year. Average annual rainfall is about for most of the Sukuma area, and about for Unyamwezi, but there is much variation from year to year and from place to place. Across the region, there is a regular sequence of soil and vegetation zones. The upper levels are dry woodland typified by trees of the Brachystegia-Isoberlinia association; these areas are often called miombo country, after one of these trees. Lower areas of grass and thornbush steppe are also common, and in Sukumaland there are large tracts of park steppe interspersed with baobabs. See also Sungusungu Sukuma Museum References Further reading External links East Africa Living Encyclopedia, African Studies Center at University of Pennsylvania, Sukuma/ Nyamwezi Language Page, African Studies Center at Michigan State University Sukuma Museum, Tanzania Daraja la Utamaduni, Denmark. Sukumadance Utamaduni archive videos, Denmark